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Bone scans suggest early hominin ‘Lucy’ spent significant time in trees

PLOS—Scans of bones from “Lucy,” the 3.18 million-year-old Australopithecus afarensis fossil, suggest that the relative strength of her arms and legs was in between that of modern chimpanzees and modern humans, according to a study published November 30, 2016 in the open-access journal PLOS ONE by Christopher Ruff from Johns Hopkins University School of Medicine, USA, and colleagues.

Early human ancestors are thought to have walked on the ground to some degree, but determining how much–and how well–has been difficult. This is partly because their long arms could have been remnants of their forebears rather than adaptive in their own lives. To assess how much Australopithecus afarensis used their arms in locomotion, Ruff and colleagues compared X-ray microtomography scans, in which cross-sections of an object are used to recreate a 3D model without destruction of the specimen, of Lucy’s upper arm bone (humerus) and upper leg bone (femur) with those of modern chimpanzees and modern humans.

The scans revealed that the relative strength of Lucy’s humerus and femur was intermediate between those of today’s chimpanzees and humans. This suggests that Australopithecus afarensis spent a significant amount of time using their arms to move through trees, possibly to forage for food and escape predators. In addition, analysis of Lucy’s femur suggests that Australopithecus afarensis‘ walking gait may have been less efficient than that of modern humans, limiting their mobility on the ground. Based on their findings, the researchers suggest that moving through trees may have remained important to some early human ancestors for millions of years.

Ruff adds: “This is the most direct evidence to date that Lucy and her relatives actually spent a significant portion of their time in the trees.”

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lucyskeleton

 The fossils that make up the Lucy skeleton. Credit: John Kappelman/University of Texas at Austin

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lucyboneclones

 Lucy skull cast. Bone Clones, Wikimedia Commons

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Article Source: PLOS news release

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*Ruff CB, Burgess ML, Ketcham RA, Kappelman J (2016) Limb Bone Structural Proportions and Locomotor Behavior in A.L. 288-1 (“Lucy”). PLoS ONE 11(11): e0166095. doi:10.1371/journal.pone.0166095

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 This richly illustrated issue includes the following stories: Recent findings shedding new light on the whereabouts of the remains of Philip of Macedon, father of Alexander the Great; how an archaeologist-sculptor is bringing bones of the dead back to life; archaeologists uncovering town life at the dawn of civilization; an exclusive interview with internationally acclaimed archaeologist James M. Adovasio about what makes the Meadowcroft Rockshelter prominent in the ongoing search for the first Americans; what archaeologists are finding at the site of the ancient city of Gath, the home town of the biblical Philistine giant, Goliath; and how scientists are redrawing the picture of human evolution in Europe.  Find it on Amazon.com.

 

 

  

 

 

 

 

Analysis of Iron Age ceramics suggests complex pattern of Eastern Mediterranean trade

PLOS—Cypriot-style pottery may have been locally produced as well as imported and traded in Turkey during the Iron Age, according to a study* published November 30, 2016 in the open-access journal PLOS ONE by Steven Karacic from Florida State University, USA, and James Osborne of the University of Chicago, USA.

White Painted and Bichrome Wares are Cypriot-style ceramics produced during the Iron Age that may provide clues about trade in the Eastern Mediterranean at that time. Although these ceramics are often assumed to be imports from Cyprus, excavations in southern Turkey have suggested that some pottery was produced locally, challenging previous assumptions about trade in the Eastern Mediterranean.

The authors of the present study analyzed White Painted and Bichrome Wares recovered from three sites in the Hatay region of Turkey: Tell Tayinat, Çatal Höyük, and Tell Judaidah, using techniques which bombarded the pottery with x-rays and neutrons, providing insight into the chemical elements they contained. Imported and local versions of this pottery had different elemental compositions, which helped the authors determine where this pottery was produced. When compared with existing datasets, the researchers found that Çatal Höyük and Tell Judaidah may only have had access to pottery imported from Cyprus whereas Tell Tayinat may have made Cypriot-style pottery locally as well as importing it.

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Cypro-Geometric III and Cypro-Archaic I (ca. 850-600 BCE) pottery from Tell Tayinat, ancient Kunulua.

(1-3) White Painted Ware vertical-sided bowls; (4-7) White Painted Ware barrel jugs; (8-10) Bichrome Ware vertical-sided bowls; (11-12) Bichrome Ware barrel jugs; (13) Bichrome Ware juglet.  Credit: Karacic et al (2016)

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 Example of a white painted ware IV ancient Cypriot jug, 7th century BC.  Zde, Wikimedia Commons

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The authors suggest that feasting practices amongst the affluent in Tell Tayinat may have driven demand for Cypriot-style pottery, resulting in either local potters producing this pottery or Cypriot potters settling in the vicinity. Usually, pottery styles are expected to become increasingly rare the further away they are found from their origin of production, so these findings suggest a complex pattern of exchange in the Eastern Mediterranean during the Iron Age.

“We were surprised to find that locally produced Cypriot-style pottery was consumed at Tell Tayinat but not the other sites included in our study,” says Karacic. “These results indicate complex social and economic interactions between the Amuq and Cyprus that we are only just beginning to understand for the Iron Age.”

Article Source: PLOS news release

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*Karacic S, Osborne JF (2016) Eastern Mediterranean Economic Exchange during the Iron Age: Portable X-Ray Fluorescence and Neutron Activation Analysis of Cypriot-Style Pottery in the Amuq Valley, Turkey. PLoS ONE 11(11): e0166399. doi:10.1371/journal.pone.0166399

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Turkeys were a major part of ancestral Pueblo life

WASHINGTON STATE UNIVERSITY—While the popular notion of the American Thanksgiving is less than 400 years old, the turkey has been part of American lives for more than 2,000 years. But for much of that time, the bird was more revered than eaten.

Washington State University archaeologists over the years have repeatedly seen evidence, from bones to blankets to DNA extracted from ancient poop, suggesting that the Pueblo people of the Southwest bred turkeys as far back as 200 B.C.

“Turkeys were an important bird symbolically and in practical ways as a source of feathers that kept people warm in the winter,” said Bill Lipe, a WSU professor emeritus of anthropology with decades of experience in the area. “And they were also important as a food source, probably primarily at periodic feasts and ritual gatherings.”

Ritual and practical importance

In what is called the Basketmaker II era, which ran from 400 B.C. to 500 A.D., ancient Pueblo people shifted from making blankets of rabbit fur to using turkey feathers. One blanket could require 12,000 feathers, which could be taken as the birds molted.

The blankets helped ward off the high-altitude chill of Mesa Verde, but the turkeys also “must have had some symbolic importance,” said Lipe. “That continues all the way through to the present. Turkey feathers are still ritually quite important among Pueblo people.”

In the late 1100s, the Pueblo population boomed from what is now Mesa Verde National Park over into nearby southeast Utah. Computer models developed at WSU by anthropologists Tim Kohler and Kyle Bocinsky suggest that deer, a major protein source, were getting hunted out and replaced by turkeys as a source of meat.

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 Mesa Verde cliff dwellings, Colorado. Wikimedia Commons

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Thanksgiving then, too

That’s reflected in the decline of deer bones found in ancient middens, or waste sites, and the rise in the number of turkey bones, said Lipe.

“At some of the larger sites it looks as if they were getting the majority of their meat supply from turkeys, with deer and rabbits being less important,” he said.

Per-capita consumption appears to have averaged around three-fourths to one and a half turkeys per year. That’s not much, but in a village of 500 people, it adds up.

“This was an important bird as a food source as well as symbolically important and valuable for making warming blankets throughout this whole period,” Lipe said. “Turkeys were one of the things they had to be thankful for.”

Maize on the menus

The bird was no Butterball. In fact, said Lipe, historical and genetic evidence indicates a different variety—independently domesticated in Mexico—was taken by the Spanish to Europe. It was later brought back to North America, where it became the basis for the present-day turkey raising industry.

Lipe’s research is looking at the cost to Pueblo people of raising turkeys for meat. About three-fourths of the Pueblo diet was maize, a type of corn, and raising a turkey required either diverting a substantial amount of the crop to the bird or growing more. Lipe calculates that raising one turkey per person each year could consume roughly one-fourth of the maize harvest.

“Converting maize to turkey meat would have added to the risks of farming in a dry-farming area that had highly variable rainfall patterns,” Lipe said. “Of course, in case of a crop failure, the turkey flock could have been reduced, but probably at the risk of increasing the risk of nutritional problems, especially in children.”

Relocation, less reliance on turkeys

Lipe is gathering data that indicates turkey consumption in the Mesa Verde area peaked in the 1200s when the human population was also peaking. Over the following century, the area underwent a massive depopulation, emptying out the elaborate cliff dwellings with which the people are so often identified.

There’s good evidence that many of the people moved to the northern Rio Grande area about 200 miles southeast to escape a variety of stresses: the threat of warfare, recurring drought and new community leadership and organization, Lipe said. It’s possible, he said, that yet another contributing factor was “the costs and risks of raising large flocks of turkeys.”

The people continued to raise turkeys in the Rio Grande area, but archaeological evidence indicates they went back to relying more on deer for meat.

Source: Washington State University press release

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Native Americans raised classic holiday bird centuries before Thanksgiving

FLORIDA STATE UNIVERSITY—Hundreds of years before the first Thanksgiving, Native Americans were raising and feasting on America’s classic holiday meal.

Florida State University Associate Professor of Anthropology Tanya Peres and graduate student Kelly Ledford write in a paper published today in the Journal of Archaeological Science: Reports that Native Americans as early as 1200 – 1400 A.D. were managing and raising turkeys.

This is the first time scientists have suggested that turkeys were potentially domesticated by early Native Americans in the southeastern United States.

“In the Americas, we have just a few domesticated animals,” Peres said. “Researchers haven’t really talked about the possibility of Native Americans domesticating or raising turkeys.”

Researchers knew that turkeys had been a part of Native American life long before the first Thanksgiving in 1621.

Their feathers were used on arrows, in headdresses and clothing. The meat was used for food. Their bones were used for tools including scratchers used in ritual ceremonies. There are even representations of turkeys in artifacts from the time. An intricately engraved marine shell pendant found at a site in central Tennessee shows two turkeys facing each other.

But this new research indicates turkeys were more than just a casual part of life for Native Americans of that era. Peres and Ledford came across a few curiosities as they examined skeletons of turkeys from archaeological sites in Tennessee that led them to believe that Native Americans were actively managing these fowls.

For one, the groupings researchers worked on had more male turkeys than a typical flock.

In a typical flock of turkeys, there are usually more females, Peres said. But in the flock they examined, they found more remains of males. That would only happen if it were designed that way, she said.

“It appears Native Americans were favoring males for their bones for tools,” Peres said. “And they certainly would have favored males for their feathers. They tend to be much brighter and more colorful than the female species. Female feathers tend to be a dull grey or brown to blend in to their surroundings since they have to sit on the nest and protect the chicks.”

The other immediately noticeable trait that stood out to Peres and Ledford was that these ancient American gobblers were big boned — much larger than today’s average wild turkey. That could be the result of them being purposefully cared for or fed diets of corn.

“The skeletons of the archaeological turkeys we examined were quite robust in comparison to the skeletons of our modern comparatives,” Ledford said. “The domestication process typically results in an overall increase in the size of the animal so we knew this was a research avenue we needed to explore.”

Peres and Ledford are working with colleagues at Washington State University to perform a DNA sequencing of these turkeys and also conduct experiments to see what the turkeys were eating. If they were being fed corn, a chemical signature should appear in the remains.

Ledford is also collecting data from additional sites across the southeastern United States to see if this pattern of managing turkeys was consistent across settlements or if it was an isolated practice.

“It might be that not everybody was practicing this, but some people were for sure,” Peres said.

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firstthanksgiving

 The first Thanksgiving. Painting print from the Library of Congress, Wikimedia Commons

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Article Source: Florida State University press reease

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 This richly illustrated issue includes the following stories: Recent findings shedding new light on the whereabouts of the remains of Philip of Macedon, father of Alexander the Great; how an archaeologist-sculptor is bringing bones of the dead back to life; archaeologists uncovering town life at the dawn of civilization; an exclusive interview with internationally acclaimed archaeologist James M. Adovasio about what makes the Meadowcroft Rockshelter prominent in the ongoing search for the first Americans; what archaeologists are finding at the site of the ancient city of Gath, the home town of the biblical Philistine giant, Goliath; and how scientists are redrawing the picture of human evolution in Europe.  Find it on Amazon.com.

 

 

  

 

 

 

 

Rice farming in India much older than thought

UNIVERSITY OF CAMBRIDGE—The latest research on archaeological sites of the ancient Indus Civilisation, which stretched across what is now Pakistan and northwest India during the Bronze Age, has revealed that domesticated rice farming in South Asia began far earlier than previously believed, and may have developed in tandem with – rather than as a result of – rice domestication in China.

The research also confirms that Indus populations were the earliest people to use complex multi-cropping strategies across both seasons, growing foods during summer (rice, millets and beans) and winter (wheat, barley and pulses), which required different watering regimes. The findings suggest a network of regional farmers supplied assorted produce to the markets of the civilisation’s ancient cities.

Evidence for very early rice use has been known from the site of Lahuradewa in the central Ganges basin, but it has long been thought that domesticated rice agriculture didn’t reach South Asia until towards the end of the Indus era, when the wetland rice arrived from China around 2000 BC. Researchers found evidence of domesticated rice in South Asia as much as 430 years earlier.

The new research is published today in the journals Antiquity and Journal of Archaeological Science by researchers from the University of Cambridge’s Division of Archaeology, in collaboration with colleagues at Banaras Hindu University and the University of Oxford.

“We found evidence for an entirely separate domestication process in ancient South Asia, likely based around the wild species Oryza nivara. This led to the local development of a mix of ‘wetland’ and ‘dryland’ agriculture of local Oryza sativa indica rice agriculture before the truly ‘wetland’ Chinese rice, Oryza sativa japonica, arrived around 2000 BC,” says study co-author Dr Jennifer Bates

“While wetland rice is more productive, and took over to a large extent when introduced from China, our findings appear to show there was already a long-held and sustainable culture of rice production in India as a widespread summer addition to the winter cropping during the Indus civilisation.”

Co-author Dr Cameron Petrie says that the location of the Indus in a part of the world that received both summer and winter rains may have encouraged the development of seasonal crop rotation before other major civilisations of the time, such as Ancient Egypt and China’s Shang Dynasty.

“Most contemporary civilisations initially utilised either winter crops, such as the Mesopotamian reliance on wheat and barley, or the summer crops of rice and millet in China – producing surplus with the aim of stockpiling,” says Petrie.

“However, the area inhabited by the Indus is at a meteorological crossroads, and we found evidence of year-long farming that predates its appearance in the other ancient river valley civilisations.”

The archaeologists sifted for traces of ancient grains in the remains of several Indus villages within a few kilometers of the site called Rakhigari: the most recently excavated of the Indus cities that may have maintained a population of some 40,000.

As well as the winter staples of wheat and barley and winter pulses like peas and vetches, they found evidence of summer crops: including domesticated rice, but also millet and the tropical beans urad and horsegram, and used radiocarbon dating to provide the first absolute dates for Indus multi-cropping: 2890-2630 BC for millets and winter pulses, 2580-2460 BC for horsegram, and 2430-2140 BC for rice.

Millets are a group of small grain, now most commonly used in birdseed, which Petrie describes as “often being used as something to eat when there isn’t much else”. Urad beans, however, are a relative of the mung bean, often used in popular types of Indian dhal today.

In contrast with evidence from elsewhere in the region, the village sites around Rakhigari reveal that summer crops appear to have been much more popular than the wheats of winter.

The researchers say this may have been down to the environmental variation in this part of the former civilisation: on the seasonally flooded Ghaggar-Hakra plains where different rainfall patterns and vegetation would have lent themselves to crop diversification – potentially creating local food cultures within individual areas.

This variety of crops may have been transported to the cities. Urban hubs may have served as melting pots for produce from regional growers, as well as meats and spices, and evidence for spices have been found elsewhere in the region.

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 Excavating a pit from which archaeobotanical samples were collected at the Indus Civilization site of Masudpur I in northwest India.  Credit: Cameron Petrie

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While they don’t yet know what crops were being consumed at Rakhigarhi, Jennifer Bates points out that: “It is certainly possible that a sustainable food economy across the Indus zone was achieved through growing a diverse range of crops, with choice being influenced by local conditions.

“It is also possible that there was trade and exchange in staple crops between populations living in different regions, though this is an idea that remains to be tested.”

“Such a diverse system was probably well suited to mitigating risk from shifts in climate,” adds Cameron Petrie. “It may be that some of today’s farming monocultures could learn from the local crop diversity of the Indus people 4,000 years ago.”

The findings are the latest from the Land, Water and Settlement Project, which has been conducting research on the ancient Indus Civilisation in northwest India since 2008.

Article Source: University of Cambridge news release.

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 This richly illustrated issue includes the following stories: Recent findings shedding new light on the whereabouts of the remains of Philip of Macedon, father of Alexander the Great; how an archaeologist-sculptor is bringing bones of the dead back to life; archaeologists uncovering town life at the dawn of civilization; an exclusive interview with internationally acclaimed archaeologist James M. Adovasio about what makes the Meadowcroft Rockshelter prominent in the ongoing search for the first Americans; what archaeologists are finding at the site of the ancient city of Gath, the home town of the biblical Philistine giant, Goliath; and how scientists are redrawing the picture of human evolution in Europe.  Find it on Amazon.com.

 

 

  

 

 

 

 

A National Treasure Tells the Story of Hawaii’s Heritage

As Founder and Editor of Popular Archaeology Magazine, Dan is a freelance writer and journalist specializing in archaeology.  He studied anthropology and archaeology in undergraduate and graduate school and has been an active participant on archaeological excavations in the U.S. and abroad.  He is the creator and administrator of Archaeological Digs, a popular weblog about archaeological excavation and field school opportunities.  

Sitting in a back room in a museum in Honolulu, Hawaii, a young Canadian archaeologist worked intently to catalogue thin section slides of 3,000-year old Lapita pottery acquired from archaeological sites in western Pacific islands. Cut with a diamond saw and then ground flat to a thickness measured only in microns, these thin slices of pottery are mounted on glass slides for close scientific examination.

“The slides can be examined under a powerful microscope to identify the minerals contained in the pottery, which can tell archaeologists about the type of clay and inclusions used to form the pottery, which can then be used to track the movement of raw materials,” said Kate Leonard, the archaeologist cataloging the slides.  

Leonard’s work is an example of how archaeology is conducted beyond the typical field operations, or excavations, that most people read about in the popular press. In fact, most archaeology is performed in places other than the field. What Leonard is doing is a small part of the total research picture that constitutes the vital behind-the-scenes work of archaeology. In this case, scientific scrutiny of these thin slices of Lapita pottery will help tell a story of who the original inhabitants of the Hawaiian Islands really were and where their ancestors came from before they became indigenous Hawaiians. The Lapita culture is known to be a prehistoric Pacific Ocean people who thrived between 1600 BCE and 500 BCE. Based on research conducted thus far, archaeologists suggest that they are ancestral to the historic indigenous cultures of Polynesia, Micronesia, and some coastal areas of Melanesia. They are thought to have been experts in seamanship and navigation, eventually colonizing Pacific islands hundreds of miles apart. Their descendants, known today as the Polynesians, came to populate islands such as Hawaii and Easter Island, and some archaeologists suggest they may even have reached as far as the South American continent. 

“The first archaeologists to study the islands relied heavily on terrestrial surveys, traditional architecture, oral history and mythologies to form their hypotheses about the first settlers of Hawaiʻi and their way of life,” continued Leonard. “Based on linguistics and oral traditions it was clear even at this early stage of Hawaiian archaeology that people had navigated the Pacific Ocean from Central East Polynesia to settle the Hawaiian Islands and develop the complex and thriving Ancient Hawaiian culture that Europeans first encountered in the late 1700s. These great voyages relied on the skills of master navigators who used the stars, winds and currents to direct their course across the vast ocean.” The vast number of artifacts recovered by archaeologists now have added considerably to understanding this picture.  

Leonard was working in Archaeology Collections, housed in the Anthropology Department of Hawaii’s famous Bernice Pauahi Bishop Museum, also known as the Hawaiʻi State Museum of Natural and Cultural History. She was doing more than cataloging slides of Lapita pottery slices. She was also scanning and cropping archival photos from the ‘Stokes Collection’. “Together with William Brigham, the first director of the Bishop Museum, John F. G. Stokes was part of the first major archaeological survey of Hawaiian heiau in 1906-1909,” said Leonard. “These photos of archaeological sites, people and places are a record of Hawai‘i long before the tourists and resorts arrived. Some of these collections will soon be available through a new online database, and through them we can see the Hawai‘i that Brigham and Stokes were exploring over 100 years ago.”

Leonard, and many archaeologists like her, believe that, in addition to the groundbreaking excavations and field research that archaeologists do, their work often produces the most significant and far-reaching results in the backrooms and labs of museums all over the world, like the Bishop Museum. Perhaps more important, it is where the great discoveries and the artifacts that illustrate them meet the public, the most important ‘clients’ and consumers of the fruits of archaeology.  

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Above and below: Today the Bishop Museum is considered the premier natural and cultural history institution in the Pacific. The primary purpose of the museum is to serve and represent the interests of Native Hawaiians. In addition to the main exhibition areas that feature Hawaiian and Pacific natural and cultural history, the museum has an active program of rotating exhibits. While I was there I was shown around the ‘Journeys: Heritage of the Northwestern Hawaiian Islands’ exhibit that is ongoing until the end of February 2017. This is one of many examples of how the Bishop Museum staff is working to use their existing collections to develop dynamic programming for its visitors.  — Kate Leonard

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“One big initiative that is going on in many museums is to use technology to make their collections more accessible – so even if you can’t go to the museum itself you can hear the stories their collections have to tell,” said Leonard. For its part, the Bishop Museum is creating online databases so researchers and the public can explore and study the collections remotely. To this end, the museum has organized groups of volunteers to process and digitize them, resulting in databases like the Ho‘omaka Hou Research Initiative Online Fishhook Database (which contains over 4,000 fishhooks that were excavated from three different sites on Hawaiʻi Island in the 1950s), the Hawaiian Archaeological Survey (HAS) Database, and the Rapa Nui Interactive Radiocarbon Database, all of which can now be accessed through the museum website.   

Moreover, the museum is also using its collections for applying non-destructive techniques to pull new information from the artifacts — such as using a portable XRF (x-ray fluorescence) machine to “zap” stone adzes. Results of this application reveals the elemental composition of the stone, giving clues about the origin of the artifact material.

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 “It looks like it was taken off the set of Star Trek!” said Leonard of this portable x-ray fluorescence machine.

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The Bishop Museum is located in west Honolulu, set on land originally occupied by the Kamehameha Schools boys’ campus. Princess Bernice Pauahi Bishop was the last member of the royal Kamehameha Dynasty which ruled the (then) Kingdom of Hawaiʻi from 1810 – 1872. After she died in 1884, her husband, Charles Reed Bishop, established the museum in her honor. Her royal heirlooms are housed there. Today, the museum is considered “the premier natural and cultural history institution in the Pacific,” and, in addition to its permanent collections and exhibits, runs a program of rotating exhibits for its visitors. 

To learn more about the Bishop Museum, see the website.

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Leonard’s time at the Bishop Museum was for but a brief period. She has moved on to Toronto for a stint at the Royal Ontario Museum and then on to Switzerland, where she will be participating in other projects as part of a global year-long journey to work at twelve different archaeological sites in 12 separate countries. She calls her project Global Archaeology: A Year of Digs. Hawaii was the 10th stop on her global trek. 

Popular Archaeology will be following and reporting on Leonard’s worldwide experiences periodically throughout 2016 as she hops from one location to another during her global journey. To continue the work, however, Leonard will need financial support from donors. Readers interested in reading about and supporting her self-directed Global Archaeology crowdfunded project can learn more at gofundme.com/globalarchaeology.

You can read more about Leonard’s experience on Hawaii here.

 

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 This richly illustrated issue includes the following stories: Recent findings shedding new light on the whereabouts of the remains of Philip of Macedon, father of Alexander the Great; how an archaeologist-sculptor is bringing bones of the dead back to life; archaeologists uncovering town life at the dawn of civilization; an exclusive interview with internationally acclaimed archaeologist James M. Adovasio about what makes the Meadowcroft Rockshelter prominent in the ongoing search for the first Americans; what archaeologists are finding at the site of the ancient city of Gath, the home town of the biblical Philistine giant, Goliath; and how scientists are redrawing the picture of human evolution in Europe.  Find it on Amazon.com.

 

 

  

 

 

 

 

DNA study unravels the history of the world’s most produced cereal

FACULTY OF SCIENCE – UNIVERSITY OF COPENHAGEN—An ancient maize genome sequence of a 5,310-year-old maize cob provides new insights into the early stages of maize domestication. The specimen is important because it dates to a point in time approximately halfway between the beginning of maize domestication and today’s corn. In a gene-by-gene analysis, the ancient sample shows that many key genes had already been affected by human selection, including the lack of a hard seed coat and changes in flowering time. Other traits were not yet under selection, including sugar content of the kernels and, surprisingly, a gene that is related to dispersal of kernels from the plant. These details are the result of a study conducted by postdoc Nathan Wales and PhD student Jazmín Ramos Madrigal from the Natural History Museum of Denmark. The results have just been published in the scientific journal Current Biology.

Researchers have long debated how and why ancient people domesticated maize, in large part because the wild ancestor of maize–known as teosinte–provides surprisingly little nutrition. Each teosinte ear produces only 5 to 12 kernels, and each kernel is surrounded by a hard casing that must be removed prior to eating.

Now, the impressive study of a 5,310-year-old maize cob from the Tehuacan Valley of Mexico brings us closer to answering these questions.

– Our study is like a genomic window into the past, says postdoc Nathan Wales, who has conducted the research together with his colleague PhD student Jazmín Ramos Madrigal, both from the Natural History Museum of Denmark.

Jazmín Ramos adds:

– By exploring the genetic history of this ancient maize it is now possible for us to infer how people used the crop in the past, selecting for certain traits at different points in time.

The study first of all shows that the ancient cob is genetically intermediate between teosinte and modern maize.

A half modern maize

In a gene-by-gene analysis, the ancient sample shows that many key genes had already been modified through human selection, including the lack of a hard seed coat and changes in flowering time.

Other traits were not yet under selection, including sugar content of the kernels and, surprisingly, a gene that is related to dispersal of kernels from the plant.

Nathan Wales explains:

– Wild plants naturally release their seeds at the appropriate time, but humans have modified domesticated cereals so they retain their seeds so they can be easily collected from fields. The finding that the ancient maize cob has the ancestral version of the gene is unexpected and encourages further research.

From a snack to a proper meal

Archaeological evidence suggests the people who planted and consumed maize 5000 years ago likely lived in small groups of several dozen people from extended families.

This could be an explanation for why the ancient Tehuacan Valley maize is morphologically and genetically so distinct from modern corn says Jazmín Ramos Madrigal and continues:

– Unlike most modern farmers, these ancient people moved seasonally and mostly consumed wild plants and animals, but supplemented their diets with some domesticated plants. It was only during later periods with higher populations and socially stratified societies that maize became the food staple. For example, the Olmecs (~1200 BC) and the Maya (200BC – 1000 AD) required reliable and predictable food sources to support their cities, and it was at that point that maize would have undergone further selection for important traits.

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 Maize of Mexico. Amefuentes, Wikimedia Commons

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Article Source: FACULTY OF SCIENCE – UNIVERSITY OF COPENHAGEN press release.

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Autism and human evolutionary success

UNIVERSITY OF YORK—A subtle change occurred in our evolutionary history 100,000 years ago which allowed people who thought and behaved differently – such as individuals with autism – to be integrated into society, academics from the University of York have concluded.

The change happened with the emergence of collaborative morality – an investment in the well-being of everyone in the group – and meant people who displayed autistic traits would not only have been accepted but possibly respected for their unique skills.

It is likely our ancestors would have had autism, with genetics suggesting the condition has a long evolutionary history.

But rather than being left behind, or at best tolerated, the research team conclude that many would have played an important role in their social group because of their unique skills and talents.

“We are arguing that diversity, variation between people, was probably more significant in human evolutionary success than the characteristics of one person, “said Penny Spikins, senior lecturer in the archaeology of human origins, at the University of York.

“It was diversity between people which led to human success and it is particularly important as it gives you different specialised roles.

“We are arguing that it is the rise of collaborative morality that led to the possibility for widening the diversity of the human personality.”

Many people with autism have exceptional memory skills, heightened perception in realms of vision, taste and smell and enhanced understanding of natural systems such as animal behaviour.

The incorporation of some of these skills into a community would play a vital role in the development of specialists, the authors of the report, which is published in Time and Mind, suggest.

A previous ethnographic study in 2005 of an elderly reindeer herder from Siberia revealed a detailed memory of the parentage, medical history and character of each one of his 2,600 animals.

His vital knowledge would have made a significant contribution to their management and survival.

The grandfather was more comfortable in the company of the reindeer than of humans, but was much respected and had a wife and son and grandchildren.

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Are there clues of autistic traits in cave art? Above is a prehistoric representation of lions, painted on the walls of the Chauvet Cave in France. Courtesy University of York 

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Finding tangible evidence of autism in archaeological records has always been challenging for academics.

Dr Spikins said “The archaeological record doesn’t give us a skeletal record for autism, but what it does do is give us a record for other people who have various differences and how they have been integrated.”

Other clues can be found in cave art and other artefacts.

“There has been a long-standing debate about identifying traits of autism in Upper Palaeolithic cave art.

“We can’t say some of it was drawn by someone with autism, but there are traits that are identifiable to someone who has autism. It was also roughly at that time that we see collaborative morality emerging.”

Source: University of York press release.

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For First Nations people, effects of European contact are recorded in the genome

UNIVERSITY OF ILLINOIS AT URBANA-CHAMPAIGN—A study of the genomes of 25 individuals who lived 1,000 to 6,000 years ago on the north coast of present-day British Columbia, and 25 of their descendants who still live in the region today, opens a new window on the catastrophic consequences of European colonization for indigenous peoples in that part of the world.

The study is reported in the journal Nature Communications.

“This is the first genome-wide study – where we have population-level data, not just a few individuals – that spans 6,000 years,” said University of Illinois anthropology professor Ripan Malhi, who co-led the new research with former graduate student John Lindo (now a postdoctoral researcher at the University of Chicago) and Pennsylvania State University biology professor Michael DeGiorgio.

The research team included members and representatives of the Canadian aboriginal communities of the Lax Kw’alaams and Metlakatla First Nation, Coast Tsimshian people whose oral histories indicate they have lived in the region for millennia. A previous study by Malhi and representatives of these First Nations showed a direct maternal link between ancient individuals buried in the region and the indigenous people living there today, an ancestry long claimed by the Metlakatla First Nation, one of the groups that participated in the study.

The new study confirms the previous findings by analyzing the exome, the entire collection of genes that contribute to a person’s traits.

“Oral traditions and archaeological evidence to date have shown that there has been continuous aboriginal occupation of this region for more than 9,000 years. This study adds another layer of scientific data linking the actual ancestral human remains to their modern descendants through their DNA over a span of 6,000 years,” said Barbara Petzelt, an author of the study and a liaison to the Metlakatla community. “It’s exciting to see how this tool of DNA science adds to the larger picture of Coast Tsimshian pre- and post-contact history – without the taint of historic European observer bias.”

In the new study, the team found that variants of an immune-related gene that were beneficial to many of those living in the region before European contact proved disadvantageous once the Europeans arrived.

The human leukocyte antigen gene family, known as HLA, contributes to the body’s ability to recognize and respond to pathogens. The gene identified in the study belongs to the HLA-DQ subfamily, which “has been associated with a variety of colonization-era infectious diseases, including measles and tuberculosis, and with the adaptive immune response to the vaccinia virus, which is an attenuated form of smallpox,” the authors wrote.

The genomes of a majority of the ancient individuals contained alleles, or variants, of the HLA-DQ gene that differed from the variants that today are common in their descendants, the researchers found.

Statistical analyses revealed that the ancient variants were under “positive selection” before European contact. This means that those variants helped the native peoples survive and thrive in northwest North America.

However, those same HLA-DQ alleles suffered a dramatic decline in the indigenous population about the time the Europeans arrived, the researchers found.

“The modern individuals show a marked decrease in the frequency of the associated alleles,” the researchers wrote.

“One of the alleles is 64 percent less common today than it was before European contact, which is a dramatic decline,” Lindo said.

Further analyses pointed to a steep population decline among the ancestors of modern Coast Tsimshian, a “reduction in effective population size of 57 percent,” the researchers reported. This dramatic die-off occurred roughly 175 years ago, about the time that European diseases were sweeping through native groups in that part of North America.

“First Nations history mainly consists of oral stories passed from generation to generation. Our oral history tells of the deaths of a large percentage of our population by diseases from the European settlers.

Smallpox, for our area, was particularly catastrophic,” said Joycelynn Mitchell, a Metlakatla co-author on the study. “We are pleased to have scientific evidence that corroborates our oral history. As technology continues to advance, we expect that science will continue to agree with the stories of our ancestors.”

The researchers tested several other hypotheses that might explain the dramatic decline of those ancient alleles.

“The only scenario compatible with this stark change in diversity is negative selection, suggesting that previously advantageous HLA-gene variants became disadvantageous, possibly contributing to the population decline that occurred upon European contact,” DeGiorgio said.

“We knew the history of this group through archaeological evidence, oral histories and written histories,” Malhi said. “And now we also know it through genomic data.”

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firstnationpic

Partners from Canada’s northwest coast, from left, Barbara Petzelt, Harold Leighton, Bill Pahl, Wendy Pahl, Yvonne Ryan and Joycelynn Mitchell, collaborated with an international team of researchers on a genetic study of First Nations peoples—both present day and ancient. Photo courtesy the Metlakatla First Nation

Article Source: University of Illinoise at Ubana-Champaign news release.

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Egyptian giant crocodile mummy is full of surprises

A three-metre-long mummified Egyptian ‘giant crocodile’, one of the finest animal mummies in the Dutch National Museum of Antiquities (Rijksmuseum van Oudheden), turns out to be literally filled with surprises. Examination of detailed new 3D CT scans has led to the conclusion that, besides the two crocodiles previously spotted inside the wrappings, the mummy also contains dozens of individually wrapped baby crocodiles. This is an exceptional discovery: there are only a few known crocodile mummies of this kind anywhere in the world. Starting on 18 November, museum visitors can perform a virtual autopsy on the 3,000-year-old mummy, using an interactive visualisation exhibit in the new Egyptian galleries.

Virtual autopsy in museum galleries

A new scan of the large crocodile mummy was recently performed at the Academic Medical Centre (AMC) in Amsterdam. An earlier CT scan in 1996 had shown that there are two juvenile crocodiles inside a mummy that looks like one large crocodile. The Swedish company Interspectral, which specializes in high-tech interactive 3D visualizations, has converted the results of the new scan into a spectacular 3D application and thus detected the dozens of baby crocodiles. Starting on 18 November, museum visitors can perform an interactive virtual autopsy on the crocodile mummy and the mummy of an Egyptian priest. On a large touch screen, they can examine the mummies layer by layer, learning about their age, physical features, and the mummification process. The amulets placed inside the linen wrappings with the mummies can also be examined in detail and from all sides in 3D.

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Mummy and scan results of ancient Egyptian crocodile mummy with baby crocodiles. Courtesy Interspectral and  Rijksmuseum van Oudheden/National Museum of Antiquities

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Crocodile mummy undergoing scanning. Courtesy Mike Bink 

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A surprise

The museum’s Egyptologists suspect that the crocodiles of different ages were mummified together as a reference to the ancient Egyptian belief in rejuvenation and new life after death. Another possibility is that no large crocodiles were available at a time when they were needed as offerings to the gods. The mummy was given the shape of one large crocodile with various kinds of stuffing: bits of wood, wads of linen, plant stems, and rope.

The ancient Egyptians mummified all sorts of animals, usually to pay homage to a particular deity that could manifest in animal form. For instance, crocodiles were offered to the god Sobek.
The museum’s curator are excited about this remarkable find: ‘What was intended as a tool for museum visitors, has yet produced new scientific insights. When we started work on this project, we weren’t really expecting any new discoveries. After all, the mummy had already been scanned. It was a big surprise that so many baby crocodiles could be detected with high- tech 3D scans and this interactive visualization.’ 

Source: Rijksmuseum van Oudheden/National Museum of Antiquities press release.

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Underwater Stone Age settlement mapped out

LUND UNIVERSITY—Seven years ago divers discovered the oldest known stationary fish traps in northern Europe off the coast of southern Sweden. Since then, researchers at Lund University in Sweden have uncovered an exceptionally well-preserved Stone Age site. They now believe the location was a lagoon environment where Mesolithic humans lived during parts of the year.

Other spectacular finds include a 9,000 year-old pick axe made out of elk antlers. The discoveries indicate mass fishing and therefore a semi-permanent settlement.

“As geologists, we want to recreate this area and understand how it looked. Was it warm or cold? How did the environment change over time?” says Anton Hansson, PhD student in Quaternary geology at Lund University.

Changes in the sea level have allowed the findings to be preserved deep below the surface of Hanö Bay in the Baltic Sea.

The researchers have drilled into the seabed and radiocarbon dated the core, as well as examined pollen and diatoms. They have also produced a bathymetrical map that reveals depth variations.

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mesolithicsite2

 The underwater site was once a lagoon about 9,000 years ago. Still screen shot from video, shown below.

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fishtrap

 Mesolithic period fishtraps found at the site. Still screen shot from video, shown below.

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mesolithictool2

 A 9,000-year-old pick axe made out of elk antlers, found at the site. Still screen shot from video, shown below.

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“These sites have been known, but only through scattered finds. We now have the technology for more detailed interpretations of the landscape”, says Anton Hansson.

“If you want to fully understand how humans dispersed from Africa, and their way of life, we also have to find all their settlements. Quite a few of these are currently underwater, since the sea level is higher today than during the last glaciation. Humans have always prefered coastal sites”, concludes Hansson.

Source: Lund University press release.

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Potato domestication in the Andes

Researchers provide evidence for the early cultivation and use of potato (Solanum tuberosum) at an archaeological site in the Andes Mountains of south-central Peru.  Studying the domestication of the potato, an important crop in the high Andes, could help illuminate the development of highland Andean culture, but limited direct botanical evidence of potato domestication in the region has hindered research efforts. Claudia Rumold and Mark Aldenderfer* collected microbotanical samples from groundstone tools from Jisakairumoko, a site situated in the western Titicaca Basin of Peru that reflects a transition from sedentism to food production. On 14 groundstone tools, the authors found 141 starch microremains, and microscope photographs and subsequent taxonomic identification revealed that 50 of the starch granules were of Solanum origin. The potato starches were similar in size to modern potato starches, and anthropogenic wear on the starches was consistent with culinary processing methods. The findings might help us understand the development of food production in Jisakaurumoko, and more broadly, illuminate plant domestication and cultivation in the Andes Mountains.

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andesjosuehermoza

 Findings may help illuminate understanding of plant domestication and cultivation in the Andes Mountains. Josue Hermoza, Wikimedia Commons 

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Source: Proceedings of the National Academy of Sciences press release.

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*“Late Archaic–Early Formative period microbotanical evidence for potato at Jiskairumoko in the Titicaca Basin of southern Peru,” by Claudia Rumold and Mark Aldenderfer.

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Neolithic dairy production in the Mediterranean

An archeological study* finds regional differences in the level of dairy-related activity in early Neolithic farming communities across the Mediterranean region. Previous research suggests that the production of dairy products such as milk in Neolithic Mediterranean communities could have been an impetus for animal domestication. To study the rise of dairy production in the Mediterranean region, Mélanie Roffet-Salque and colleagues analyzed lipid residues on more than 550 ceramic sherds and osteo-archeological data on age-at-death for domesticated animals from 82 sites in the northern Mediterranean and Near East that dated between the seventh and fifth millennia BC. In combination with previously published data, the ceramic and osteo-archaeological analyses revealed regional differences in the level of dairy-related activity in Early Neolithic farming communities across the Mediterranean region. Moreover, milk residues in ceramic artifacts from both the east and west of the region contrasted with data from sites in northern Greece, where high frequencies of pig bones indicated a reliance on meat production. According to the authors, except for parts of mainland Greece, dairy production was likely practiced across the Mediterranean region from the onset of agriculture and might have contributed to the spread of culture and animal domestication in the region.

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dairycowsmartinabegglen

 Dairy-related activity differed across regions in Neolithic culture and may have impacted culture spread and animal domestication. Martin Abegglen, Wikimedia Commons

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Source: Proceedings of the National Academy of Sciences press release. 

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*“Regional asynchronicity in dairy production and processing in early farming communities of the northern Mediterranean,” by Cynthianne Debono Spiteri et al.

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Neanderthal inheritance helped humans adapt to life outside of Africa

CELL PRESS—As the ancestors of modern humans made their way out of Africa to other parts of the world many thousands of years ago, they met up and in some cases had children with other forms of humans, including the Neanderthals and Denisovans. Scientists know this because traces of those meetings remain in the human genome. Now, researchers reporting in the Cell Press journal Current Biology on November 10 find more evidence that those encounters have benefited humans over the years.

All told, the new study* identifies 126 different places in the genome where genes inherited from those archaic humans remain at unusually high frequency in the genomes of modern humans around the world. We owe our long-lost hominid relatives for various traits, and especially those related to our immune systems and skin, the evidence shows.

“Our work shows that hybridization was not just some curious side note to human history, but had important consequences and contributed to our ancestors’ ability to adapt to different environments as they dispersed throughout the world,” says Joshua Akey of University of Washington School of Medicine in Seattle.

Akey says it’s relatively straightforward today to identify sequences that were inherited from archaic ancestors. Studies show that non-African individuals inherited about 2% of their genomes from Neanderthals. People of Melanesian ancestry inherited another 2% to 4% of their genomes from Denisovan ancestors. But it hasn’t been clear what influence those DNA sequences have had on our biology, traits, and evolutionary history.

In the new study, the researchers took advantage of recently constructed genome-scale maps of Neanderthal and Denisovan sequences identified in more than 1,500 geographically diverse people. Their sample included close to 500 individuals each from East Asia, Europe, and South Asia. They also analyzed the genomes of 27 individuals from Island Melanesia, an area including Indonesia, New Guinea, Fiji, and Vanuatu. The researchers were searching for archaic DNA sequences in those human genomes at frequencies much higher than would be expected if those genes weren’t doing people any good.

While the vast majority of surviving Neanderthal and Denisovan sequences are found at relatively low frequencies (typically less than 5%), the new analyses turned up 126 places in our genomes where these archaic sequences exist at much higher frequencies, reaching up to about 65%. Seven of those regions were found in parts of the genome known to play a role in characteristics of our skin. Another 31 are involved in immunity.

“The ability to increase to such high population frequencies was most likely facilitated because these sequences were advantageous,” Akey explains. “In addition, many of the high-frequency sequences span genes involved in the immune system, which is a frequent target of adaptive evolution.”

Generally speaking, the genes humans got from Neanderthals or Denisovans are important for our interactions with the environment. The evidence suggests that hybridization with archaic humans as our ancient ancestors made their way out of Africa “was an efficient way for modern humans to quickly adapt to the new environments they were encountering.”

The researchers say they’d now like to learn more about how these genes influenced humans’ ability to survive and what implications they might have for disease. They are also interested in expanding their analysis to include geographically diverse populations in other parts of the world, including Africa.

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neanderthalscene

 Above: Artist’s depiction of Le Moustier Neanderthals, AMNH. Wikimedia Commons

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Article Source: Cell Press news release

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*Current Biology, Gittelman et al.: “Archaic Hominin Admixture Facilitated Adaptation to Out-of-Africa Environments” 

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Evolution purged many Neanderthal genes from human genome

PLOS—Neanderthal genetic material is found in only small amounts in the genomes of modern humans because, after interbreeding, natural selection removed large numbers of weakly deleterious Neanderthal gene variants, according to a study* by Ivan Juric and colleagues at the University of California, Davis, published November 8th, 2016 in PLOS Genetics.

Humans and Neanderthals interbred tens of thousands of years ago, but today, Neanderthal DNA makes up only 1-4% of the genomes of modern non-African people. To understand how modern humans lost their Neanderthal genetic material and how humans and Neanderthals remained distinct, Juric and colleagues developed a novel method for estimating the average strength of natural selection against Neanderthal genetic material. They found that natural selection removed many Neanderthal alleles from the genome that might have had mildly negative effects. The scientists estimate that these gene variations were able to persist in Neanderthals because Neanderthals had a much smaller population size than humans. Once transferred into the human genome, however, these alleles became subject to natural selection, which was more effective in the larger human populations and has removed these gene variants over time.

The study is one of the first attempts to quantify the strength of natural selection against Neanderthal genes. It enhances the understanding of how Neanderthals contributed to human genomes (along with Harris and Nielsen, Genetics 2016). It also confirms previous reports that East Asian people had somewhat higher initial levels of Neanderthal ancestry than Europeans. These findings shed new light on the role of population size on losing or maintaining Neanderthal ancestry in humans, and add to our understanding of our close relatives – the Neanderthals.

Of the study, Ivan Juric says: “For a while now we have known that humans and Neanderthals hybridized. Many Europeans and Asians-along with other non-African populations-are the descendants of those hybrids. Previous work has also shown that, following hybridization, many Neanderthal gene variants were lost from the modern human population due to selection. We wanted to better understand the causes of this loss. Our results are compatible with a scenario where the Neanderthal genome accumulated many weakly deleterious variants, because selection was not effective in the small Neanderthal populations. Those variants entered the human population after hybridization. Once in the larger human population, those deleterious variants were slowly purged by natural selection.

The key finding of our study therefore is that the current levels of Neanderthal ancestry in modern humans are in part due to long-term differences in human and Neanderthal population sizes. The human population size has historically been much larger, and this is important since selection is more efficient at removing deleterious variants in large populations. Therefore, weakly deleterious variants that could persist in Neanderthals could not persist in humans. We think that this simple explanation can account for the pattern of Neanderthal ancestry that we see today along the genome of modern humans.

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neanderthalskull

 Evolution purged many Neanderthal genes from the human genome.  Jaysmark, Flickr, CC BY

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From our study, we cannot conclude that differences in demography explain everything. For instance, genes that were deleterious only in human-Neanderthal hybrids might have existed, and sexual selection or other forms of selection against hybrids could have been very important processes during human-Neanderthal hybridization. Still, I find it fascinating to think that if the Neanderthals had reached larger population sizes in Europe, or if modern human populations had grown slower, some of us today would probably carry a lot more Neanderthal ancestry in our genome.”

Source: PLOS news release

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*Juric I, Aeschbacher S, Coop G (2016) The Strength of Selection against Neanderthal Introgression. PLoS Genet 12(11): e1006340. doi:10.1371/journal.pgen.1006340

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Middle Stone Age ochre processing tools reveal cultural and behavioral complexity

PLOS—Middle Stone Age humans in East Africa may have employed varied techniques to process ochre for functional and symbolic uses, according to a study* published November 2, 2016 in the open-access journal PLOS ONE by Daniela Rosso from the University of Bordeaux, France, and colleagues.

Ochre fragments-which are rocks containing iron oxides, red or yellow in color-have often been found at Middle Stone Age sites and have played a role in shaping the cultures of early African Homo sapiens. Some researchers suggest that ochre was used for utilitarian purposes, for example in glue to adhere handles to tools, whilst others believe that the pigment was used for symbolic purposes, such as body painting or creating meaningful patterns. However, few ochre processing tools have been studied in detail to understand how this material was processed.

The authors of the present study used microscopy, spectroscopy and X-ray techniques to analyze 21 ochre-processing tools and two ochre-stained artifacts from the Porc-Epic Cave, a 40,000-year-old Middle Stone Age site in Ethiopia.

The researchers found that the tools appeared to have been used to process different types of iron-rich rocks. A range of stone types were used as grindstones, producing ochre powder of different color and coarseness, likely employed to suit different functions, revealing a high degree of behavioral complexity. For example, finer powders would be most suitable for body painting, whereas coarser ochre would be suitable for functional uses. One round stone appeared to have been painted or used as a stamp to apply pigment powder to different surfaces. The authors note that this is the first Paleolithic site to provide such comprehensive documentation of ochre processing techniques.

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Top left: tool used to grind ochre from the Middle Stone Age levels of Porc-Epic Cave, Dire Dawa, Ethiopia; Top right: residues of ochre on the same object; Bottom left: modified ochre lumps from the same levels; Bottom right: photo of the cave. Courtesy  D.E. Rosso and F. d’Errico

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“This study analyses the largest collection of such tools, found at Porc-Epic Cave, Dire Dawa, Ethiopia, in levels dated at c. 40,000 years ago,” says Rosso. “Ochre processing at Porc-Epic Cave reflects a high degree of behavioral complexity, and represents ochre use that was probably devoted to a variety of functions.”

Source: PLOS press release

If you liked this article, see the premium article in Popular Archaeology about the role of ochre in human evolution

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*Rosso DE, Pitarch Martí A, d’Errico F (2016) Middle Stone Age Ochre Processing and Behavioural Complexity in the Horn of Africa: Evidence from Porc-Epic Cave, Dire Dawa, Ethiopia. PLoS ONE 11(11): e0164793. doi:10.1371/journal.pone.0164793

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The Once and Future Cobá

As Founder and Editor of Popular Archaeology Magazine, Dan is a freelance writer and journalist specializing in archaeology.  He studied anthropology and archaeology in undergraduate and graduate school and has been an active participant on archaeological excavations in the U.S. and abroad.  He is the creator and administrator of Archaeological Digs, a popular weblog about archaeological excavation and field school opportunities.  

Cobá, Quintana Roo, Mexico — Enveloped by a natural tropical canopy and set near two lagoons on the Yucatán Peninsula of Mexico, the village of Cobá has been home to a small, quiet community of Maya farmers and other native residents who have made their living for decades from the natural resources such tropical locations could bestow. Best known today for its spectacular Maya ruins, this location once boasted an ancient population of about 55,000 people at its peak between 600 and 900 AD, featuring a complex ancient stone and plaster road or causeway system (sacbeob), linking the ancient city to other smaller ancient sites near and far. At its core were the typical monumental structures characteristic of an ancient Maya metropolis. “The investigations at Cobá mapped approximately 30% of the site between 1974 and 1976, including the core area and the suburban area,” says Dr. Ellen Kintz, an archaeologist with an in-depth knowledge of Coba and who has worked in the area for 40 years. “The site is rich in carved monuments (stelae), ball courts, and murals (in sadly decayed states), but the richness of Cobá is reflected in the housemounds (residential compounds) that showcase the social life of the ancient inhabitants.” Cobá attracts thousands of visitors each year from nearby resort centers like Cancún. It is a popular excursion destination during the tourist season. 

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 Above and below: The ancient ruins of Cobá draw tourists from all over the world, from the nearby resorts. Images courtesy Ellen R. Kintz, Maya Research Program.

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But aside from the ruins, there is another Cobá that garners little attention.

“The village itself is often overlooked,” says Kintz. “While Cobá’s residents [today consisting of 120 families] are skilled artists and craftsmen, tourists tend to ignore the modern village and pass directly to the ruins.”

There are reasons for this. Many of the stores and houses are undeveloped and unpainted, and the streets are poorly maintained. “Many family businesses are set up inside of people’s homes, with little to no indication given to tourists that there are items for sale within the community,” adds Kintz.

Modern Cobá and ancient Cobá thus strike a clear picture of contrasts. Like many small villages and towns across the world that share their space with their overshadowing monumental archaeological remains, Cobá’s state of being falls far short of its promise when it comes to the potential advantages its ancient past could endow its present.  

Kintz, with help from the Maya Research Program (MRP), hopes to change that situation for Cobá. She envisions a Cobá that she believes deserves a renaissance of economic and artistic revitalization.  “Currently, we are hard at work to raise funds for a dramatic transformation of the village’s primary thoroughfare,” she says.  “The roadway [thoroughfare] will be designed as a place for sustainable commerce that will form the backbone of the community’s economic revival.” 

In essence, it will be a new marketplace for promoting the village’s culture and talents to the visiting public. Relying heavily on the input of the residents, a multifaceted plan has already been developed and the villagers are now beginning their work. According to Kintz, it involves, among other things, (1) painting and decorating the houses of 120 families with inspiration from traditional Maya iconography and dress designs; (2) the purchase of tables and chairs for displaying their wares and artistic works along the side of the community road for the visiting public; and (3) creation of new and improved signage to inform and direct visitors to other interesting points of interest within the contemporary village.

“We have estimated that if average tourist spending in Cobá increases by a mere $10 per person, average family income in the village would increase by nearly 20%,” says Kintz. “This would represent a dramatic increase in the villagers’ quality of life, and allow Cobá’s people to begin to secure their own future.” 

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 Above and below: Images of the modern village of Cobá. Courtesy Ellen R. Kintz, Maya Research Program

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If successful, the project will provide one example of how past and present archaeological activity and restoration creates tangible practical benefits for people — in particular, how it can and does improve the lives of local populations throughout the world. 

For more information about the Cobá community development project and how one can contribute, see the website. All donations are tax deductible and go directly to the community of Cobá to assist in achieving their goals under the project.

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 This richly illustrated issue includes the following stories: Recent findings shedding new light on the whereabouts of the remains of Philip of Macedon, father of Alexander the Great; how an archaeologist-sculptor is bringing bones of the dead back to life; archaeologists uncovering town life at the dawn of civilization; an exclusive interview with internationally acclaimed archaeologist James M. Adovasio about what makes the Meadowcroft Rockshelter prominent in the ongoing search for the first Americans; what archaeologists are finding at the site of the ancient city of Gath, the home town of the biblical Philistine giant, Goliath; and how scientists are redrawing the picture of human evolution in Europe.  Find it on Amazon.com.

 

 

  

 

 

 

 

50,000 years of history of the European bison traced through ancient DNA

Three bison populations colonized Western Europe via three successive waves, the first between 57,000 and 34,000 years ago when the climate was temperate. During the glaciation period, this first population of ancient wisent was replaced by the steppe bison, the ancestor of the present-day American bison. As shown in paintings from the French Chauvet Cave, both of these two bison types were present in Southern France between 39,000 and 34,000 years ago. When the climate became mild again 14,000 ago, a new wisent population coming from the Southern Caucasus colonized Western Europe. This paleogenomic study* was performed by scientists from the Institut Jacques Monod (CNRS/University Paris Diderot)1 on ca. sixty samples that have been collected by a collaborative international network and whose dates cover the last 50,000 years. The results obtained show that the genetic diversity of bison gradually decreased until their disappearance in the wild in 19182. The study indicates that climatic and environmental changes and human pressure play a major role on the population dynamics of the megafauna, of which the wisent is the biggest representative still alive in Europe. 

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 Bison painting in the Chauvet Cave, France.  Claude Valette, Wikimedia Commons

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Source: CNRS press release

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1  Particularly in collaboration with Jean-Philippe Brugal at laboratory Afrique au Sud du Sahara (CNRS/Ministère des Affaires étrangères) and at Laboratoire méditerranéen de préhistoire Europe-Afrique (CNRS/Aix-Marseille Université/Ministère de Culture et de la Communication) and Malgorzata Tokarska at Mammal Research Institute Polish Academy of Science in Poland.

2  A herd of wild wisent has been reconstituted in Poland from zoo animals.

 

*Past climate changes, population dynamics and the origin of Bison in Europe. Diyendo Massilani, Silvia Guimaraes, Jean-Philip Brugal, E. Andrew Bennett, Malgorzata Tokarska, Rose-Marie Arbogast, Gennady Baryshnikov, Gennady Boeskorov, Jean-Christophe Castel, Sergey Davydov, Stéphane Madelaine, Olivier Putelat, Natalia N. Spasskaya, Hans-Peter Uerpmann, Thierry Grange, Eva-Maria Geigl. BMC Biology, le 21 octobre 2016. DOI : 10.1186/s12915-016-0317-7. https://bmcbiol.biomedcentral.com/articles/10.1186/s12915-016-0317-7

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winter2016ebookcover

 This richly illustrated issue includes the following stories: Recent findings shedding new light on the whereabouts of the remains of Philip of Macedon, father of Alexander the Great; how an archaeologist-sculptor is bringing bones of the dead back to life; archaeologists uncovering town life at the dawn of civilization; an exclusive interview with internationally acclaimed archaeologist James M. Adovasio about what makes the Meadowcroft Rockshelter prominent in the ongoing search for the first Americans; what archaeologists are finding at the site of the ancient city of Gath, the home town of the biblical Philistine giant, Goliath; and how scientists are redrawing the picture of human evolution in Europe.  Find it on Amazon.com.

 

 

  

 

 

 

 

Upper Paleolithic humans may have hunted cave lions for their pelts

PLOS—Upper Paleolithic humans may have hunted cave lions for their pelts, perhaps contributing to their extinction, according to a study* published October 26, 2016 in the open-access journal PLOS ONE by Marián Cueto from the Universidad de Cantabria, Spain, and colleagues.

The Eurasian cave lion, likely among the largest lion species ever to have lived, became extinct around 14,000 years ago, but the reasons for its disappearance are not clear. Upper Paleolithic humans were previously known to have hunted other small and large carnivores, but archaeological evidence of lion hunting is sparse. To help fill in this gap, Cueto and colleagues examined nine fossilized cave lion toe bones from the Upper Paleolithic cave site of La Garma, in northern Spain, for evidence of cave lion exploitation by humans.

The researchers found that most bones showed signs of having been modified by humans using stone tools, with a specialized technique similar to that used by modern hunters when skinning prey to keep the claws attached to the fur. The authors suggest that the toe bones they analysed may therefore have been part of a single lion pelt, which possibly lay on the floor of the occupied cave. La Garma is known to have been associated with human rituals, and cave lions may have been symbolic animals for Upper Paleolithic humans.

While the analysis is not definitive evidence that Upper Paleolithic humans exploited cave lions for their pelts, the authors speculate that human hunting of cave lions, perhaps as part of ritual activities, might have been a factor in cave lion extinction.

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 Structures of the Zone IV from the Lower Gallery of La Garma.  Credit: Pedro Saura

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Source: PLOS press release

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*Cueto M, Camarós E, Castaños P, Ontañón R, Arias P (2016) Under the Skin of a Lion: Unique Evidence of Upper Paleolithic Exploitation and Use of Cave Lion (Panthera spelaea) from the Lower Gallery of La Garma (Spain). PLoS ONE 11(10): e0163591. doi:10.1371/journal.pone.0163591

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winter2016ebookcover

 This richly illustrated issue includes the following stories: Recent findings shedding new light on the whereabouts of the remains of Philip of Macedon, father of Alexander the Great; how an archaeologist-sculptor is bringing bones of the dead back to life; archaeologists uncovering town life at the dawn of civilization; an exclusive interview with internationally acclaimed archaeologist James M. Adovasio about what makes the Meadowcroft Rockshelter prominent in the ongoing search for the first Americans; what archaeologists are finding at the site of the ancient city of Gath, the home town of the biblical Philistine giant, Goliath; and how scientists are redrawing the picture of human evolution in Europe.  Find it on Amazon.com.

 

 

  

 

 

 

 

Ancient burials suggestive of blood feuds

UNIVERSITY OF ARIZONA—There is significant variation in how different cultures over time have dealt with the dead. Yet, at a very basic level, funerals in the Sonoran Desert thousands of years ago were similar to what they are today. Bodies of the deceased were buried respectfully, while families and mourners followed certain customs to honor lives lost.

At least, most of the time.

In some cases, however, the dead received far less reverential treatment. Instead, bodies were tossed haphazardly, headfirst, into their eternal resting place, sometimes sustaining post-mortem injuries on top of an often already violent death.

These atypical burials are of interest to University of Arizona bioarchaeologist James Watson, whose study of ancient graves is providing new insight into the social and biological factors that might have motivated violent killings and statement-making burials in the Southwest’s Early Agricultural Period, and how some of the same factors may still be relevant today.

Watson’s new research, which analyzed a series of atypical burial sites in the southwestern United States and northwestern Mexico between 2100 B.C. and A.D. 50, is published in the journal Current Anthropology. It was co-authored by UA anthropology doctoral student Danielle O. Phelps.

The burials Watson analyzed showed evidence of a violent end; skeletal remains often included broken bones or projectile points indicating a shooting death. Yet the position of the bodies in their graves was the most telling. Awkwardly splayed or deposited in the ground headfirst, they clearly were not given customary burial treatment, in which they would have been arranged in a flexed position on their sides. The burials also lacked other standard funerary features of the time, which would have been present had the bodies been interred by family members.

“These people were buried very differently than the rest of the community, and we’re trying to understand why that is,” said Watson, UA associate professor of anthropology and associate director and associate curator at the Arizona State Museum. “We’re arguing that the way they were tossed into these pits is a form of continued desecration of the body. It’s moving from violence on the living individual, through to the process of death, to violence on the corpse.”

So-called atypical burials often are associated with victims of “bad deaths”—deaths described as unnatural, unplanned or “evil” in nature, Watson said. A common theory in the geographical area where Watson works is that the bodies belong to those accused of witchcraft. Yet, given that the corpses were not dismembered in the way suspected witches’ historically were, Watson offers an alternative explanation.

In his paper, he argues that these bodies may have been the victims of blood feuds, or family feuds, during a time when the population was experiencing some serious growing pains. He further suggests that the violence of these ongoing blood feuds may have become enculturated, or ingrained, in certain communities.

“This was right when agriculture came into the area, and these were the earliest villages, so we think that some of this violence comes from growing pains, as villages are established and people are claiming territory and farming the desert river valleys,” Watson said. “Social tensions develop between communities, or even within communities, and end up boiling over into violence.”

At the root of that violence may be a desire to win prestige, which in turn has important biological implications, even though the perpetrator of violence may not be consciously thinking about those implications, Watson said.

“Prestige has a potential to confer biological benefits, in the sense that you can gain access to power and wealth, including wives, and have more offspring, so there is a level of biological fitness there,” he said.

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 Bodies buried by family members were arranged in a flexed position on their side (left), while in atypical burials, bodies were left in more awkward positions (right).  Illustration by Caitlin McPherson

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But why the brutal handling of bodies after death?

Watson uses evolutionary biology’s “costly signaling theory” to explain what might be behind the ruthless post-mortem treatment.

Costly signaling theory is the idea that all animals exhibit certain behaviors and physical traits that are simultaneously advantageous and risky. For example, male birds often have colorful plumage to attract females, which is biologically beneficial, as it will result in more offspring. At the same time, the bright feathers could be costly, as they also make the birds more visible to predators.

Watson suggests that violent killings followed by disrespectful burials similarly send a strong signal—one asserting power and dominance. This signal has the potential benefit of attracting prestige, and the wives and children that come with it, but it also comes with significant risk of retaliation by the victim’s family.

“By creating these atypical burials—where they’re basically desecrating the bodies of the people killed — they’re signaling their prowess to gain status, but it’s at a very significant potential cost, and that is either their life or lives in their community or family,” Watson said.

While Watson’s work focuses on violence that occurred 2,000 to 4,000 years in the past, he suggests costly signaling theory might also be applied in the context of modern-day violence.

“With some of the issues that we’re seeing today—like increased violence and murders in a lot of cities, police shootings, retaliation upon police—a lot of kids are growing up in a culture of violence in certain communities, and they’re learning different values on how to interact with their environment because of the disadvantages that they have,” Watson said. “They gain status because they’re good at being violent; that’s how you gain respect, then along with that comes advantages—wealth, women and offspring, potentially. There is a biological imperative to signal that they are worthy of the status they’re trying to earn.”

Source: University of Arizona press release

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winter2016ebookcover

 This richly illustrated issue includes the following stories: Recent findings shedding new light on the whereabouts of the remains of Philip of Macedon, father of Alexander the Great; how an archaeologist-sculptor is bringing bones of the dead back to life; archaeologists uncovering town life at the dawn of civilization; an exclusive interview with internationally acclaimed archaeologist James M. Adovasio about what makes the Meadowcroft Rockshelter prominent in the ongoing search for the first Americans; what archaeologists are finding at the site of the ancient city of Gath, the home town of the biblical Philistine giant, Goliath; and how scientists are redrawing the picture of human evolution in Europe.  Find it on Amazon.com.