UNIVERSITY OF PLYMOUTH—More than half of Europe’s forests have disappeared over the past 6,000 years thanks to increasing demand for agricultural land and the use of wood as a source of fuel, new research led by the University of Plymouth suggests.
Using pollen analysis from more than 1,000 sites, scientists showed that more than two thirds of central and northern Europe would once have been covered by trees.
Today, that is down to around a third, although in more western and coastal regions, including the UK and Republic of Ireland, the decline has been far greater with forest coverage in some areas dropping below 10%.
However, those downward trends have begun to reverse, through the discovery of new types of fuel and building techniques, but also through ecological initiatives such as the ongoing National Forest project and the new Northern Forest, announced by the UK Government in January 2018.
The study is published in Nature’s Scientific Reports and lead author Neil Roberts, Professor of Physical Geography at the University of Plymouth, said: “Most countries go through a forest transition and the UK and Ireland reached their forest minimum around 200 years ago. Other countries in Europe have yet to reach that point, and some parts of Scandinavia – where there is not such a reliance on agriculture – are still predominantly forest. But generally, forest loss has been a dominant feature of Europe’s landscape ecology in the second half of the current interglacial, with consequences for carbon cycling, ecosystem functioning and biodiversity.”
The research, which also involved academics in Sweden, Germany, France, Estonia and Switzerland, sought to establish precisely how the nature of Europe’s forests has changed over the past 11,000 years.
It combined three different methods of analysing pollen data, taken from the European Pollen Database, and showed that forest coverage actually increased from around 60% 11,000 years ago up to as much as 80% 6,000 years ago.
However, the introduction of modern farming practices during the Neolithic period sparked a gradual decline which accelerated towards the end of the Bronze Age and has largely continued until the present day.
Professor Roberts said this was one of the more surprising elements of the research because while forest clearance might be assumed to be a relatively recent phenomena, 20% of Britain’s forests had actually gone by the end of the Bronze Age 3,000 years ago.
He added: “Around 8,000 years ago, a squirrel could have swung tree to tree from Lisbon to Moscow without touching the ground. Some may see that loss as a negative but some of our most valued habitats have come about through forests being opened up to create grass and heathland. Up until around 1940, a lot of traditional farming practices were also wildlife friendly and created habitats many of our most loved creatures. This data could then potentially be used to understand how future forestry initiatives might also influence habitat change.”
______________________________
Gribskov Forest in Denmark. Malene Thyssen, Wikimedia Commons
POLITECNICO DI MILANO—In early November 2017, Nature published the results of the Scan Pyramids project, led by Mehdi Tayoubi (Hip Institute, Paris) and Kunihiro Morishima (University of Nagoya, Japan): there is a “huge void”, at least 30 meters long, within the Pyramid of Cheops.
Discovering its function and content clearly is a most passionate challenge for archaeologists.
Giulio Magli, Director of the Department of Mathematics and Professor of Archaeoastronomy at the Politecnico di Milano, has formulated one of the first hypotheses of interpretation.
“Cheop’s Pyramid, built around 2550 BC, is one of the largest and most complex monuments in the history of architecture. Its internal rooms are accessible through narrow tunnels, one of which, before arriving at the funerary chamber, widens and rises suddenly forming the so-called Great Gallery. The newly discovered room is over this gallery, but does not have a practical function of “relieving weight ” from it, because the roof of the gallery itself was already built with a corbelled technique for this very reason.”
So what does that mean?
“There is a possible interpretation, which is in good agreement with what we know about the Egyptian funerary religion as witnessed in the Pyramids Texts. In these texts it is said that the pharaoh, before reaching the stars of the north, will have to pass the “gates of the sky” and sit on his “throne of iron”.
Within the Pyramid there are four narrow shafts, the width of a handkerchief, directed to the stars. The pharaoh’s afterlife was in fact, according to the Texts, in the sky, and in particular among the stars of the north, like the Big Dipper and Draco. Two of the four channels open onto the facades of the monument, while the other two run into small doors. One of the two doors, the south one, has been explored several times without results, while the north one is still sealed.
These doors are with all probabilities representative of the “gates of the sky” and the north one could well lead into the newly discovered room. The room may contain, at its upper end and exactly under the apex of the great pyramid, an object needed by Cheops after crossing the doors: the “iron throne” mentioned in the Pyramid Texts.
We can get an idea of how this object could be, looking at the throne of Cheop’s mother, Queen Hetepheres, which has been found in pieces and reconstructed by Harward University. It is a low chair of cedar wood covered with sheets of gold and faience. Cheops’ could be similar, but coated with thin iron sheets. Of course it would not be melted iron, but meteoritic iron that is, fallen from the sky in the form of Iron meteorites (distinguishable due to the high percentage of the element Nickel) and again cited in the Texts. It is certain that the Egyptians knew this material for many centuries before Cheops, and continued to use it for special items designed for the Pharaohs during millennia: just think of the famous Tutankamon dagger.
A way to check or discard this hypothesis exists: a new exploration of the north shaft. This is a long-awaited exploration, long before the room’s discovery. At present, it is difficult to say with certainty that the northern channel leads into the newly discovered room – the “big void” as called by its discoverers – because the available images are approximate. The Scan Pyramid project indeed used a non-invasive technique based on the measurement of muons: elementary particles that are generated in cosmic rays and are absorbed differently depending on the materials they go through. The result is similar to a radiography which must be interpreted.
_________________________________
North-south section of the Great Pyramid showing (dust-filled area) the hypothetical chamber, in connection with the lower southern shaft. The upper southern shaft does not intersect the chamber (as instead suggested by the section) because, when viewed in plan, it is displaced to the west with respect to the Great Gallery. Giulio Magli
_________________________________________
A view of the Giza Pyramids from the east with the Great Pyramid in the foreground. Giulio Magli
PLOS—Ancient DNA from the Phoenician remains found in Sardinia and Lebanon could provide insight into the extent of integration with settled communities and human movement during ancient times, according to a study* published January 10, 2018 in the open-access journal PLOS ONE by E. Matisoo-Smith from the University of Otago, New Zealand and Pierre Zalloua from the Lebanese American University, Beirut, and colleagues. The researchers looked at mitochondrial genomes, which are maternally inherited, in a search for markers of Phoenician ancestry.
The Phoenicians were an ancient civilization who emerged in 1800 BCE in the Northern Levant and by the 9th century BCE had spread their culture across the Mediterranean to parts of Asia, Europe and Africa through their trade networks and settlements. Despite their widespread influence, most of what we know about the Phoenicians comes from Greek and Egyptian documents on this civilization.
The authors of this study analyzed Phoenicians’ ancient DNA to investigate how Phoenicians integrated with the Sardinian communities they settled. The researchers found 14 new ancient mitogenome sequences from pre-Phoenician (~1800 BCE) and Phoenician (~700-400 BCE) samples from Lebanon and Sardinia and then compared these with 87 new complete mitogenomes from modern Lebanese and 21 recently published pre-Phoenician ancient mitogenomes from Sardinia.
The researchers found evidence of continuity of some lineages of indigenous Sardinians after Phoenician settlement, which suggests that there was integration between Sardinians and Phoenicians in Monte Sirai. They also discovered evidence of new, unique mitochondrial lineages in Sardinia and Lebanon, which may indicate the movement of women from sites in the Near East or North Africa to Sardinia and the movement of European women to Lebanon. Combined, the authors suggest that there was a degree of female mobility and genetic diversity in Phoenician communities, indicating that migration and cultural assimilation were common occurrences.
Pierre Zalloua says, “this DNA evidence reflects the inclusive and multicultural nature of Phoenician society. They were never conquerors, they were explorers and traders”.
____________________________________
A sampling from the Tomb 351 Monte Sirai. Michele Guirguis
UPPSALA UNIVERSITY—In a new study published in PLoS Biology, an international research team suggests Scandinavia was populated by two main migrations after the last glacial maximum: an initial migration of groups from the south (modern day Denmark and Germany) and an additional migration from the north-east, following the ice-free Atlantic coast.
After the last glacial maximum more than 10,000 years ago, Scandinavia was one of the last parts of Europe that became ice-free and thus habitable for humans. In the new study, a team of interdisciplinary researchers assembled archaeological and genetic data in combination with the latest results of climate modeling in order to study the early post-glacial settlers of Scandinavia.
The team collected human remains of seven individuals from the Norwegian Atlantic coast and the Baltic islands of Gotland and Stora Karlsö. The remains were radiocarbon-dated to more than 8,000 years before present and belonged to a part of the Stone Age called the Mesolithic. DNA was extracted from bones and teeth for genome sequencing. For one individual, the team was able to reconstruct one of the highest quality genomes of any prehistoric individual so far.
The team compared the genomic data to the genetic variation of Mesolithic hunter-gathers from other parts of Europe.
“We were surprised to see that Mesolithic hunter-gatherers from the Norwegian west coast were genetically more similar to contemporaneous populations from east of the Baltic Sea while hunter-gatherers from what is Sweden today were genetically more similar to other hunter-gatherers from central and western Europe”, says population-geneticist Torsten Günther of Uppsala University, one of the lead authors of the study.
This contradiction between genetics and geography can be explained by two main migrations into Scandinavia after the last glacial maximum: an initial migration of groups from the south – modern day Denmark and Germany – and an additional migration from the north-east, following the ice-free Atlantic coast.
Obtaining genomic data from the Norwegian individuals was the key to understanding the migration routes. The genetic patterns overlap the distribution patterns of different stone tool techniques, and archaeological artifacts and diet isotopes show that the Scandinavian hunter-gatherers used different stone tool technology and relied on different food sources.
“The archaeological sites have been subject to different types of research for more than a century, it is exciting to see what the genetic data can add to our understanding of these hunter-gatherer groups”, says osteoarcheologist Jan Storå of Stockholm University, one of the senior authors of the study.
The comprehensive data allowed the team a deeper study of the population dynamics in Mesolithic Scandinavia. One consequence of the two groups mixing was a surprisingly large number of genetic variants in Scandinavian hunter-gatherers.
“These groups were genetically more diverse than the groups that lived in central, western and southern Europe at the same time. That is in stark contrast to the pattern seen today where more genetic variation is found in southern Europe and less in the north,” says Mattias Jakobsson, population-geneticist at Uppsala University and one of the senior authors of the study.
The two groups migrating into Scandinavia in the Mesolithic were genetically distinct and displayed different physical appearance. The people from the south likely displayed blue-eyes and dark skin and the people from the northeast a variation of eye colors and pale skin.
Similar to northern Europeans today, the Mesolithic hunter-gatherers were facing a high latitude climate associated with low levels of sunlight in winter causing low temperatures, which would be a challenging environment to live in. Humans can cope with such conditions physiologically and by changes in behavior, but in the long term there is also potential for genetic adaptation to such environments.
The team found that genetic variants associated with light skin and eye pigmentation were carried, on average, in greater frequency among Scandinavian hunter-gatherers than their ancestors from other parts of Europe.
“That suggests local adaptation taking place in Scandinavia after these groups arrived which is in line with the world-wide pattern of pigmentation decreasing with distance to the equator,” Torsten Günther explains.
While comparing the Mesolithic groups to modern-day northern Europeans, the team found particular similarities in a gene associated with physical performance.
“It will be interesting to see if future studies can show how this gene affects the physiological adaptation to cold environments,” says Torsten Günther.
Modern-day people of northern Europe trace relatively little genetic material back to the Mesolithic Scandinavians.
“What we have found is that already 10,000 years ago, after Scandinavia became ice-free, different groups of migrants entered the Scandinavian Peninsula. A migration process into Scandinavia that we have seen over and over again; later in the Stone Age, in the Bronze Age and in historical times,” says Mattias Jakobsson.
___________________________________
The excavations of Stora Förvar on Stora Karlsö. Hjalmar Stolpe. Antiquarian Topographical Archives (ATA), Stockholm.
____________________________________
Skeletal fragments from the Hummervikholmen site. Beate Kjørslevik
AUSTRALIAN NATIONAL UNIVERSITY—An archaeologist from The Australian National University (ANU) is set to redefine what we know about elderly people in cultures throughout history, and dispel the myth that most people didn’t live much past 40 prior to modern medicine.
Christine Cave, a PhD Scholar with the ANU School of Archaeology and Anthropology, has developed a new method for determining the age-of-death for skeletal remains based on how worn the teeth are.
Using her method, which she developed by analysing the wear on teeth and comparing with living populations of comparable cultures, she examined the skeletal remains of three Anglo-Saxon English cemeteries for people buried between the years 475 and 625.
Her research determined that it was not uncommon for people to live to old age.
“People sometimes think that in those days if you lived to 40 that was about as good as it got. But that’s not true.
“For people living traditional lives without modern medicine or markets the most common age of death is about 70, and that is remarkably similar across all different cultures.”
Ms Cave said the myth has been built up due to deficiencies in the way older people are categorised in archaeological studies.
“Older people have been very much ignored in archaeological studies and part of the reason for that has been the inability to identify them,” she said.
“When you are determining the age of children you use developmental points like tooth eruption or the fusion of bones that all happen at a certain age.
“Once people are fully grown it becomes increasingly difficult to determine their age from skeletal remains, which is why most studies just have a highest age category of 40 plus or 45 plus.
“So effectively they don’t distinguish between a fit and healthy 40 year old and a frail 95 year old.
“It’s meaningless if you are trying to study elderly people.”
Ms Cave said the new method will give archaeologists a more accurate view of past societies and what life was like for older people.
For those in the three cemeteries she studied, which were Greater Chesterford in Essex, Mill Hill in Kent, and Worthy Park in Hampshire, she found a marked difference in the way male and female people of old age were buried.
“Women were more likely to be given prominent burials if they died young, but were much less likely to be given one if they were old,” she said.
“The higher status men are generally buried with weapons, like a spear and a shield or occasionally a sword.
“Women were buried with jewellery, like brooches, beads and pins. This highlights their beauty which helps explain why most of the high-status burials for women were for those who were quite young.”
Ms Cave’s study “Sex and the Elderly” was published in the Journal of Anthropological Archaeology.
____________________________________
Teeth examined as part of Christine Cave’s research. Credit: ANU
MCMASTER UNIVERSITY, HAMILTON, ON, Jan. 4, 2018 – A team of scientists has sequenced the complete genome of an ancient strain of the Hepatitis B virus (HBV), shedding new light on a pervasive, complex and deadly pathogen that today kills nearly one million people every year.
While little is known about its evolutionary history and origin, the findings confirm the idea that HBV has existed in humans for centuries.
The findings are based on genomic data extracted from the mummified remains of a small child buried in the Basilica of Saint Domenico Maggiore in Naples, Italy.
Previous scientific analysis of the 16th century remains—which did not include DNA testing—suggested the child was infected with Variola virus, or smallpox. In fact, this was the oldest evidence for the presence of smallpox in Medieval remains and a critical time stamp for its origins.
Using advanced sequencing techniques, researchers now suggest otherwise—the child was actually infected by HBV. Interestingly, children infected with HBV infections can develop a facial rash, known as Gianotti-Crosti syndrome. This may have been misidentified as smallpox and illustrates the trickiness of identifying infectious disease in the past.
The findings are published online in the journal PLOS Pathogens.
“These data emphasize the importance of molecular approaches to help identify the presence of key pathogens in the past, enabling us to better constrain the time they may have infected humans,” explains Hendrik Poinar, an evolutionary geneticist with the McMaster Ancient DNA Centre and a principal investigator with the Michael G. DeGroote Institute for Infectious Disease Research.
Using small tissue samples of skin and bone, scientists were able to tease out tiny fragments of DNA and then stitch together pieces of genetic information to create a much more complete picture.
While viruses often evolve very rapidly—sometimes in just days—researchers suggest that this ancient strain of HBV has changed little over the last 450 years and that the evolution of this virus is complex.
While the team found a close relationship between the ancient and modern strains of HBV, both are missing what is known as temporal structure. In other words, there is no measurable rate of evolution throughout the 450-year period which separates the mummy sample from modern samples.
By some estimates, more than 350 million people living today have chronic HBV infections while approximately one-third of the global population has been infected at some point in their lives. Researchers suggest that the underline the importance of studying ancient viruses.
“The more we understand about the behaviour of past pandemics and outbreaks, the greater our understanding of how modern pathogens might work and spread, and this information will ultimately help in their control,” says Poinar.
Image: The mummified remains of a small child buried in the Basilica of Saint Domenico Maggiore in Naples, Italy. Previous analysis of the 16th century remains had suggested the child was infected with smallpox, in what had been believed to be the earliest dated evidence of the virus. Advanced sequencing techniques, now suggest the child was actually infected by Hepatitis B. Credit: Gino Fornaciari, University of Pisa
Direct genetic traces of the earliest Native Americans have been identified for the first time in a new study. The genetic evidence suggests that people may have entered the continent in a single migratory wave, perhaps arriving more than 20,000 years ago.
The data, which came from archaeological finds in Alaska, also points to the existence of a previously unknown Native American population, whom academics have named “Ancient Beringians”.
The findings are being published in the journal Nature and present possible answers to a series of long-standing questions about how the Americas were first populated.
It is widely accepted that the earliest settlers crossed from what is now Russia into Alaska via an ancient land bridge spanning the Bering Strait which was submerged at the end of the last Ice Age. Issues such as whether there was one founding group or several, when they arrived, and what happened next, are the subject of extensive debate, however.
In the new study, an international team of researchers led by academics from the Universities of Cambridge and Copenhagen sequenced the full genome of an infant – a 6-week-old girl named Xach’itee’aanenh t’eede gay, or Sunrise Child-girl, by the local Native community – whose remains were found at the Upward Sun River archaeological site in Alaska in 2013.
To their surprise, they found that although the child had lived around 11,500 years ago, long after people first arrived in the region, her genetic information did not match either of the two recognised branches of early Native Americans, which are referred to as Northern and Southern. Instead, she appeared to have belonged to an entirely distinct Native American population, which they called Ancient Beringians.
The DNA from the infant has provided an unprecedented window into the history of her people, said Ben Potter, one of the lead authors of the study and a professor of anthropology at the University of Alaska Fairbanks. She and the 11,500-year-old remains of a younger female infant, also found at the Upward Sun River site in 2015, were closely related, likely first cousins. The younger infant has been named “Ye?kaanenh T’eede Gaay” (dawn twilight girl-child).
Further analyses then revealed that the Ancient Beringians were an offshoot of the same ancestor population as the Northern and Southern Native American groups, but that they separated from that population earlier in its history. This timeline allowed the researchers to construct a picture of how and when the continent might have been settled by a common, founding population of ancestral Native Americans, that gradually divided into these different sub-groupings.
The study was led by Professor Eske Willerslev, who holds positions both at St John’s College, University of Cambridge, UK, and the University of Copenhagen in Denmark.
“The Ancient Beringians diversified from other Native Americans before any ancient or living Native American population sequenced to date. It’s basically a relict population of an ancestral group which was common to all Native Americans, so the sequenced genetic data gave us enormous potential in terms of answering questions relating to the early peopling of the Americas,” he said.
“We were able to show that people probably entered Alaska before 20,000 years ago. It’s the first time that we have had direct genomic evidence that all Native Americans can be traced back to one source population, via a single, founding migration event.”
The study compared data from the Upward Sun River remains with both ancient genomes, and those of numerous present-day populations. This allowed the researchers first to establish that the Ancient Beringian group was more closely related to early Native Americans than their Asian and Eurasian ancestors, and then to determine the precise nature of that relationship and how, over time, they split into distinct populations.
Until now, the existence of two separate Northern and Southern branches of early Native Americans has divided academic opinion regarding how the continent was populated. Researchers have disagreed over whether these two branches split after humans entered Alaska, or whether they represent separate migrations.
The findings suggest two new scenarios for populating the New World: One is that there were two distinct groups of people who crossed over the Beringian land bridge. A second is that one group of people crossed over the land bridge and then split in Beringia into two groups: Ancient Beringians and other Native Americans, with the latter moving south of the ice sheets 15,700 years ago.
In any case, the Upward Sun River genome shows that Ancient Beringians were isolated from the common, ancestral Native American population, both before the Northern and Southern divide, and after the ancestral source population was itself isolated from other groups in Asia. The researchers say that this means it is likely there was one wave of migration into the Americas, with all subdivisions taking place thereafter.
According to the researchers’ timeline, the ancestral population first emerged as a separate group around 36,000 years ago, probably somewhere in northeast Asia. Constant contact with Asian populations continued until around 25,000 years ago, when the gene flow between the two groups ceased. This cessation was probably caused by brutal changes in the climate, which isolated the Native American ancestors. “It therefore probably indicates the point when people first started moving into Alaska,” Willerslev said.
Around the same time, there was a level of genetic exchange with an ancient North Eurasian population. Previous research by Willerslev has shown that a relatively specific, localised level of contact between this group, and East Asians, led to the emergence of a distinctive ancestral Native American population.
Ancient Beringians themselves then separated from the ancestral group earlier than either the Northern or Southern branches around 20,000 years ago. Genetic contact continued with their Native American cousins, however, at least until the Upward Sun River girl was born in Alaska around 8,500 years later.
The geographical proximity required for ongoing contact of this sort led the researchers to conclude that the initial migration into the Americas had probably already taken place when the Ancient Beringians broke away from the main ancestral line. Jos Vctor Moreno-Mayar, from the University of Copenhagen, said: “It looks as though this Ancient Beringian population was up there, in Alaska, from 20,000 years ago until 11,500 years ago, but they were already distinct from the wider Native American group.”
Finally, the researchers established that the Northern and Southern Native American branches only split between 17,000 and 14,000 years ago which, based on the wider evidence, indicates that they must have already been on the American continent south of the glacial ice.
The divide probably occurred after their ancestors had passed through, or around, the Laurentide and Cordilleran ice sheets – two vast glaciers which covered what is now Canada and parts of the northern United States, but began to thaw at around this time.
The continued existence of this ice sheet across much of the north of the continent would have isolated the southbound travellers from the Ancient Beringians in Alaska, who were eventually replaced or absorbed by other Native American populations. Although modern populations in both Alaska and northern Canada belong to the Northern Native American branch, the analysis shows that these derive from a later “back” migration north, long after the initial migration events. What this suggests is that the Ancient Beringian people remained in the Far North for thousands of years, while the ancestors of other Native American peoples spread south throughout the rest of North America. The DNA results, along with other archaeological data, suggest that Athabascan ancestors moved north again, possibly around 6,000 years ago, eventually absorbing or replacing the Ancient Beringian population and establishing deep roots in their ancestral lands.
“One significant aspect of this research is that some people have claimed the presence of humans in the Americas dates back earlier – to 30,000 years, 40,000 years, or even more,” Willerslev added. “We cannot prove that those claims are not true, but what we are saying, is that if they are correct, they could not possibly have been the direct ancestors to contemporary Native Americans.”
The study, Terminal Pleistocene Alaskan genome reveals first founding population of Native Americans, is published in Nature.
______________________________________
Excavations at the Upward Sun River archaeological site in Alaska. The new study shows that the remains found there belonged to members of a previously unknown Native American population, whom academics have named “Ancient Beringians”. Credit: Ben Potter
UNIVERSITY OF GRANADA—An international team, including researchers from the UGR’s anthropology group led by Prof. Miguel Cecilio Botella López of the Department of Legal Medicine, Toxicology and Physical Anthropology, has discovered the world’s oldest known cases of breast cancer and multiple myeloma (a type of bone marrow cancer). The discoveries were made by conducting CT scans of two mummies found in the pharaonic necropolis of Qubbet el-Hawa in Aswan, Egypt.
Following their thorough analysis of the mummies, the international research team has established that the woman with breast cancer died around 2000 B.C., while the man with multiple myeloma died around 1800 B.C. Both individuals belonged to the ruling classes (or at least to the wealthy classes) of the governing Egyptian families of Elephantine.
The researchers employed computed tomography scanning techniques (CT scans) to analyse the mummies. CT scanning techniques provide better results than traditional methods, which invariably lead to significant loss of the mummy wrapping as well as to partial destruction of the dressing and the body itself.
Moreover, tomography scanning techniques are more precise when it comes to ascertaining information about the insides of the mummies, as well as capturing minute details in the dressing and about the embalming techniques employed.
The same CT scanning technique was also applied to two fully intact mummies from the Late Period of ancient Egypt — the dressings on which were also still intact.
Prof. Botella López explains: “Both mummies were still wrapped in spectacular shrouds of multi-coloured faience beads, which in turn resemble a mask. The body structures of mummies from this period are superbly preserved and we can discern very clearly what their faces looked like.” Through reconstructions carried out using specific software, researchers were able to conduct detailed studies of these mummies from the Late Period, one of which is the body of a boy around 9 years of age, while the other is that of a young teenage girl.
Meanwhile, the two oldest mummies — those which have been affected by cancer—have been reduced to bones and are wrapped in a considerable number of bandages. Details such as these suggest that embalming techniques changed over time and that the techniques described by the Greek historian Herodotus were only established in the Late Period, at least in that southern part of Ancient Egypt, from the 10th century onward.
The research team, led by Dr. Mamoun, obtained the images at the Radiodiagnosis Service of Aswan University Hospital. They employed a next-generation CT scanner capable of performing 124 tomographic slices simultaneously and with a very high degree of precision. Staff from the Radiodiagnosis Service of the “Campus de la Salud” Hospital in Granada have also collaborated on this groundbreaking research project.
Studies conducted on the two oldest mummies, which reveal evidence of breast cancer and multiple myeloma—the oldest known cases to date—have enabled researchers to confirm that these diseases were already present in humans in ancient times. The research findings also confirm that these individuals belonged to an advanced society with enough resources to support and care for them throughout the long course of their diseases, at a time when no cures or treatments were available.
No traces of disease have been found in the mummies from the Late Period. Consequently, researchers posit acute infections as the probable cause of death in these instances, since infections either result in death or are cured within short time periods and, as a result; they do not leave any marks on bones. In ancient times, infections were the most common cause of death and, overall, they are currently still the most common cause of death across the globe, despite the vast range of treatment options that have been made available in modern times.
______________________________________
Image of the mummy obtained using the CT scanner. Credit: Patricia Mora
Receive 30 days free access to the popular new CuriosityStream lineup of documentaries on science, history, nature, and technology as a new Popular Archaeology premium subscriber.
UNIVERSITY OF EXETER—Bones dug up from under an Exeter street may be the remains of the first ever turkey dinner in England, archaeologists believe.
The 16th century bones – two femurs (thigh bones) and an ulna (wing) – have been analysed by University of Exeter archaeologists and identified as among some the first turkeys to be brought to England from the Americas. The bones are on display at the Royal Albert Memorial Museum & Art Gallery (RAMM) where Spanish, German and Italian pottery and glassware from the same site are also displayed. These items could have been on the table when the turkey dinner was served. The first turkeys were introduced to England in 1524 or 1526 by William Strickland, a member of Parliament in the reign of Elizabeth the first, following a voyage to the Americas.
Strickland is recorded to have bought six turkeys from Native American traders, and after he sailed back with them to Bristol, which is 80 miles away from Exeter, sold them for tuppence each.
When turkeys first appeared in England they would have been a rare sight and the first ones are more likely to have been kept as pets for display of wealth rather than served as food.
The bird became very popular after 1550 and already a common sight at Christmas dinners by the 1570s, before Thanksgiving in America was even invented. Popular history even suggests that Henry VIII may have had turkey for Christmas. The bird became so popular that thousands of turkeys were driven in to London like cattle in the 17th century.
The bones were found in 1983 as part of excavations at Paul Street, in central Exeter, before the building of a shopping centre but have never been identified or dated. Archaeologists at the University of Exeter have now examined the bones and judging from pottery lying beside them, they date from the period 1520 to 1550.
Professor Alan Outram, zooarchaeologist and Head of Archaeology at Exeter, said: “As the date of these bones overlaps with the historical evidence of Stickland’s introduction of the birds, the remains of this feast may well represent the earliest physical evidence for a turkey dinner in Britain. This is an important discovery and could allow more research to be carried out about early domestic breeds and how the turkey has changed genetically since the 16th century.”
Analysis by Malene Lauritsen, a post-graduate researcher in the University of Exeter’s archaeology department, has proved from the bones that the turkeys were butchered and were probably eaten as part of a feast by wealthy people. The pottery lying alongside was also of high quality.
They were found together with the remains of a veal calf, several chickens, at least one goose and a sheep. This selection of food – some of which were very expensive at the time – suggests this was the rubbish created by a feast attended by people of high status.
“What is exciting about these turkey bones found in Exeter is that they date from almost exactly the same time as the first birds came to England. Their age certainly means it is possible that these are the remains of one of the first turkeys to come to England, or a turkey bred from this group,” Ms Lauritsen said.
“It is extremely rare to find turkey bones from this period. Remains from the first half of the 16th century have only been found in two other sites in Britain, the oldest from at St Alban’s Abbey in Hertfordshire. I have found cut marks on the bones, showing the birds were butchered. We can only guess at who ate them, and for what reason, but turkey would have been very expensive and the same household certainly ate other pricy meat too, so this must have been a special occasion.”
Wild turkeys were eaten by native Americans and their feathers were also used for ceremonial purposes, including headdresses and robes.
They were first brought to Britain from America by William Strickland, a Puritan, who traded them with Native Americans. He continued to import them and made so much money, he was able to build a stately home in Yorkshire.
Strickland, who became an MP and was known for his ferocious debating style, adopted the turkey as the symbol on his family crest in 1550. His coat of arms is reported to be the first depiction of the turkey in Britain. The village church where Strickland is buried has images of turkeys depicted in stained-glass windows, a carved lectern and even stone sculptures on the walls. The bones found during excavations at Paul street, in central Exeter, have been stored in boxes in the Royal Albert Memorial Museum’s stores, and are on temporary display.
The bones are part of the collections at RAMM, and are on temporary display to celebrate the new discovery about their origins. In February 2020, the bones will be displayed in RAMM’s Making History Gallery alongside all the discoveries made from a wider archaeological research project with the University of Exeter called “Exeter: A Place in Time”.
RAMM Assistant Curator Tom Cadbury said: “This is a fascinating discovery and really shows what an international place Tudor Exeter was. RAMM already displays some of the Spanish, German and Italian pottery and glassware found on the site, perhaps the turkey dinner was eaten off one of these. RAMM welcomes research on the archaeological finds from Exeter in the museum; evidence such as this helps us uncover stories about the lives of past people in Exeter.”
Cllr Rachel Sutton, Lead Councillor for Economy & Culture and Deputy Leader of Exeter City Council said: “Exeter is blessed having a museum and a university that are both world-class. Working together, they are uncovering information about Exeter’s past that would have been inconceivable only decades ago. Collaborations such as these are vital to Exeter’s success.”
_____________________________________
Malene Lauritsen with turkey bones. Credit: University of Exeter
Receive 30 days free access to the popular new CuriosityStream lineup of documentaries on science, history, nature, and technology as a new Popular Archaeology premium subscriber.
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.
A team of archaeologists excavating at the site of Ziyaret Tepe in southeastern Turkey discovered a rare and unique cuneiform tablet — one that tells a story of frustration and desperation expressed by an ancient Assyrian official, providing a glimpse of conditions in the Assyrian Empire just before its collapse in the 7th century, B.C.
Recovered within the remains of what archaeologists have identified as an administrative complex, the clay tablet, small enough to be held in the palm of one’s hand, features, in cuneiform script, a letter written by Mannu-ki-libbali, who was a senior official of the Assyrian provincial capital of Tushan. Tushan was a 7th-century city that governed an area on the outskirts of the Assyrian Empire. In the letter, he responds to an order to assemble a unit of chariotry, but he explains that all of the skilled professionals he needed to accomplish it had already fled the city. He expresses his frustration and resignation with these final statements:
“How can I command? ….. Death will come out of it. No one will escape. I am done!”
“This letter is unparalleled,” writes the excavation leadership in an article published in Popular Archaeology Magazine. “It can only have been written as the front line drew close to Tushan and the infrastructure of the empire collapsed. As a first-hand account of Assyria in its death-throes it is unique.”
The administrative complex in which the tablet was found also yielded a remarkable archive of cuneiform tablets. Totaling 27, they were discovered in fragments on the floors of the rooms of the complex. “The contents of the tablets include movements of grain, the loan of a slave, lists of personnel, the resettlement of people and a census enumerating military officers and their agricultural holdings,” wrote the excavation leadership about the finds. “But the majority of the tablets deal with transactions of barley – deliveries from outlying farmsteads, loans and payments for rations.”They span the period from 614 BC to 611 BC — around the time of the the fall of Nineveh.
“This is the first time that Assyrian administrative texts from this period have ever been found,” stated dig directors Timothy Matney and John MacGinnis. The archive provides a window on the Assyrian world as the Babylonian king Nabopolassar was waging military campaigns against a disintegrating Assyrian empire.
Full-scale excavations at Ziyaret Tepe began in 2000 and lasted for 12 seasons. Located on the upper Tigris river abut 60 km east of Diyarbakir in southeastern Turkey, the site consists of a central mound 30 m high and the remains of a surrounding lower town about 30 hectares in area. The project, which was headed in the field by Prof. Timothy Matney of the University of Akron, Ohio, began with geophysical prospection and ceramic surface collection, and work at the site eventually yielded structural and artifact remains that evidenced a massive provincial capital that flourished for almost 300 years. According to written records, it was founded on a previously occupied site by the Assyrian king Ashurnasirpal II in 882 BC, but was then finally captured by the Babylonian king Nabopolassar in 611 BC. Archaeologists have uncovered a palace, an administrative complex, elite residences, and a military barracks at the site.
______________________________________
Letter ZTT 22, in which the writer Mannu-ki-libbali reports on the disintegration of the military infrastructure as the Assyrian empire collapsed. Ziyaret Tepe Archaeological Project
Receive 30 days free access to the popular new CuriosityStream lineup of documentaries on science, history, nature, and technology as a new Popular Archaeology premium subscriber.
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.
Popular Archaeology Magazine is pleased to announce the publication of the Winter 2018 issue. In this issue, the following major feature articles are offered:
1. End of Empire: The Archaeological Excavations at Ziyaret Tepe (Premium Article)
Excavations have revealed a massive ancient Assyrian provincial capital, including a unique and remarkable glimpse into the demise of an ancient empire.
2. The Update: Unearthing New Clues to America’s Lost Colony (Free to the public)
New archaeological discoveries may help solve two of historic America’s most compelling mysteries: The fate of the “lost colony” and the elusive location of the first English settlement on Roanoke Island. (Updated and revised from a previous article, with additional new findings)
3. Khirbet Qeiyafa, the Biblical Tradition and King David (Premium Article)
Author and excavation director Yosef Garfinkel summarizes the remarkable findings and implications from his excavation of an ancient early 10th century fortified city in Israel.
4. Ground-Truthing History at Jamestown (Free to the public)
In his latest book, author and archaeologist William Kelso explains how archaeology has changed the face of history at the site of America’s first permanent English colony.
5. Inside the Lost Grottoes of Maijishan (Free to the public)
Experts and Chinese officials are on a mission to preserve one of the world’s most magnificent yet least-known cultural treasures for posterity.
6. Go Now to Shiloh (Premium Article)
Archaeologists are beginning to shed renewed light on an ancient site — where, according to the biblical account, the tabernacle for the Ark of the Covenant may have once stood.
I hope you will enjoy the new issue, and as always, we welcome your comments and suggestions for future issues.
Climate change could have played a major role in shaping and changing the sociopolitical development of ancient civilizations in the Indian subcontinent, according to a new study. Although past research has attempted to explore the relationship between climate change and civilization, links between Indian summer monsoon (ISM) variability and historic regional events have been challenging to derive, due largely to the lack of detailed, high-resolution climate records. To bridge this knowledge gap, Gayatri Kathayat and colleagues utilized a high-resolution and precisely dated record of speleothem oxygen isotopes from two stalagmite profiles in Sahiya Cave, North India. This region is strongly influenced by upstream changes in ISM circulation and rainfall, making the stalagmites found in Sahiya Cave reliable records of past climate change. Kathayat and colleagues combined these new records with previous Sahiya Cave speleothem oxygen isotope records they had obtained during a prior study – forming one of the most thorough recordings of ISM variability over the last 5,700 years ever established. This detailed record revealed a trend in drier conditions, which began approximately 4,100 years ago, but spanned multiple centuries and perhaps contributed to the deurbanization of the Indus Valley civilization, they say. Kathayat and colleagues believe climate change could have contributed to the downfall of the Guge Kingdom in western Tibet around 1620 A.D., as the speleothem oxygen isotope record indicates the region experienced severe drought around this time. The authors acknowledge possible anthropogenic factors that could have contributed to changes in ancient Indian civilizations as well; therefore, they believe future studies of archeological and paleoclimate data are necessary.
_____________________________________
The ruins at Tsaparang, the ancient capital city of the Guge Kingdom in western Tibet, approximately 150 km (as the crow flies) from Sahiya Cave, North India. The Guge Kingdom thrived for 700 years but suddenly collapsed around the 1630s following two decades of dramatic downturns in Indian monsoon rainfall and Northern Hemisphere temperature. Credit: Dr. Houyuan Lu in 2013
_____________________________________
Article Source: Science Advancesis published by AAAS, the nonprofit science society.
_________________________________________________
Receive 30 days free access to the popular new CuriosityStream lineup of documentaries on science, history, nature, and technology as a new Popular Archaeology premium subscriber.
MAX PLANCK INSTITUTE FOR THE SCIENCE OF HUMAN HISTORY—The Chachapoyas region was conquered by the Inca Empire in the late 15th century. Knowledge of the fate of the local population has been based largely on Inca oral histories, written down only decades later after the Spanish conquest. The Inca accounts claim that the native population was forcibly resettled out of Chachapoyas and dispersed across the Inca Empire. However, a new study in Scientific Reports, by an international team including researchers from the Max Planck Institute for the Science of Human History, uses genetic evidence to reveal that despite Inca conquest, the population of Chachapoyas has remained genetically distinct, and not assimilated with that of the Inca heartland.
Despite their spectacular achievements, from the first cities of the Americas to the Inca Empire, the indigenous peoples of the Andes left no written histories. One legacy that can now be read, however, is the genetic diversity of their descendants today, especially when taken together with the rich archaeology of the Andes and the prehistory of its native languages. This is the approach taken in a new study in Scientific Reports to test the demographic legacy of the Incas.
The study emerges out of a collaboration between research institutes in Peru and in Germany, including the Max Planck Institute for the Science of Human History. The focus is on a key region in the cloud-forest transition between the Andes and Amazonia in northern Peru. Here the Incas encountered fierce resistance from the “Warriors of the Clouds,” the Chachapoyas culture, noted particularly for its distinctive body-shaped sarcophagi and the monumental fortress of Kuelap, the “Machu Picchu of the north.” Particularly to punish and to secure control over such rebellious lands, the Incas are thought to have resettled millions of people across the “Four Quarters” of their empire, Tawantinsuyu. Chachapoyas was reportedly singled out for such treatment, making it an ideal case for using genetics to test the accuracy of Inca oral histories, which were not written down until almost a century later, by the Spanish conquistadors.
“By targeting various linguistic indicators, we were able to pinpoint a genetic signal in Chachapoyas that turned out to be far more diverse than we expected, especially in the male line, from father to son,” explains Chiara Barbieri, a geneticist at the Max Planck Institute for the Science of Human History in Jena, Germany, and lead author of the study. “First of all, there’s still a strong surviving Native American component, despite all the admixture with European genes ever since the Spanish conquest. What’s more, here the native component is quite different from the main genetic network in the highlands of central and southern Peru. This is where the Inca Empire and its predecessors originated, and their conquests, road networks and empire-building ended up homogenizing the genetic make-up here.” The current study reveals how the people of Chachapoyas, by contrast, remained relatively isolated. “So it seems that some genetic legacy of the Chachapoyas did indeed resist Inca impacts, all the way through to today,” explains Barbieri.
Two Peruvian geneticists, José Sandoval and Ricardo Fujita of the Universidad San Martin de Porres in Lima, Peru, also took part in the study. “These latest samples are part of a wider genetic coverage of Peru that we’ve been building up for years. It’s these groups like the Chachapoya, culturally and linguistically highly distinctive, who have the most to tell us about our ancestors: where they came from, where they migrated to, what interactions they had with each other, and so on. Also, the Chachapoyas culture left such extensive archaeological remains that there are good prospects for recovering ancient DNA, to complement the modern picture.”
Paul Heggarty, a linguist and senior author of the study, also of the Max Planck Institute for the Science of Human History, was first motivated to launch this project after unexpected results from a linguistic fieldwork trip to Chachapoyas. He was able to find a few remaining elderly speakers of an indigenous language that most assumed was already extinct in this region. “Quechua is one of our most direct living links to the people of the New World before Columbus. It still has millions of speakers, more than any other language family of the Americas – but not in Chachapoyas anymore. There are only a dozen or so fluent speakers now, in a few remote villages, so we need to act fast if we’re to work out its real origins here.”
The Chachapoyas form of Quechua has usually been classified as most closely related to the Quechua spoken in Ecuador, but the new DNA results show no close connections between the Quechua-speakers in these two areas. “Linguists need to rethink their traditional view of the family tree of Quechua languages, and the history of how they spread through the Andes,” notes Heggarty. “It seems that Quechua reached Chachapoyas without any big movement of people. This also doesn’t fit with the idea that the Incas forced out the Chachapoyas population wholesale.”
Jairo Valqui, another linguist co-author from the National University of San Marcos in Lima, adds a further perspective on an even earlier language layer. “Once Quechua and Spanish arrived, the local Chachapoyas languages died out. Recovering anything from them is a real puzzle and a challenge for linguists. They left very few traces, but there are some characteristic combinations of sounds, for example, that still survive in people’s surnames and in local placenames, like Kuelap itself.”
Valqui, himself a Chachapoyano, also makes a point of taking these genetic results back to the local population. “For Peruvian society today, this matters. There’s long been an appreciation of the Incas, but often at the cost of sidelining everything else in the archaeological record across Peru, and the diversity in our linguistic and genetic heritage too. As these latest findings remind us: Peru is not just Machu Picchu, and its indigenous people were not just the Incas.”
_________________________________________
The fortress of Kuelap, popularly known as ‘the Machu Picchu of the north,’ dominates the landscape at an elevation of 3,000 meters. Credit: Chiara Barbieri
______________________________________
This is a map of sampling locations and approximate distribution of sub-branches of the Quechua language family, as traditionally classified. Red dot 1 marks the sampling locations in the Amazonas region (Chachapoyas City, Luya, Huancas, Utcubamba South, La Jalca); red dot 2 marks that in the San Martín region (Lamas, Wayku neighbourhood). The inset zooms in on the sampling locations in Amazonas. Barbieri et al. Enclaves of genetic diversity resisted Inca impacts on population history. Scientific Reports, DOI: 10.1038/s41598-017-17728-w.
The body-shaped sarcophagi of Karajía contained the remains of high-ranking Chachapoya ancestors. The inhabitants of Chachapoyas today may in part descend from these pre-Inca populations. Credit: Chiara Barbieri
Receive 30 days free access to the popular new CuriosityStream lineup of documentaries on science, history, nature, and technology as a new Popular Archaeology premium subscriber.
CLUSTER OF EXCELLENCE “RELIGION AND POLITICS”—Classical scholars from the Cluster of Excellence “Religion and Politics” of the University of Münster discovered a large number of sealings in south-east Turkey. “This unique group of artefacts comprising more than 1,000 pieces from the municipal archive of the ancient city of Doliche gives many insights into the local Graeco-Roman pantheon – from Zeus to Hera to Iuppiter Dolichenus, who turned into one of the most important Roman deities from this site”, classical scholar and excavation director Prof. Dr. Engelbert Winter from the Cluster of Excellence explains at the end of the excavation season. “The fact that administrative authorities sealed hundreds of documents with the images of gods shows how strongly religious beliefs shaped everyday life. The cult of Iuppiter Dolichenus did not only take place in the nearby central temple, but also left its mark on urban life”, says Prof Winter. “It also becomes apparent how strongly Iuppiter Dolichenus, originally worshipped at this location, was connected with the entire Roman Empire in the 2nd and 3rd centuries AD: many of the images show the god shaking hands with various Roman emperors.”
The excavation team has been exploring the temple of the soldier god Iuppiter Dolichenus for 17 years. This year, the team focussed on the urban area. “Under a mosaic dated to 400 AD within a complex of buildings, we were able to uncover an even older mosaic floor of equally high quality”, Prof. Winter explains. “According to the present findings, there is much evidence of a late antique church. This could turn out to be an important contribution to understanding the history of early Christianity in this region.” The excavations in the three-local aisled building complex began in 2015. Up to the present, 150 square metres of the large central nave bordered by columns have been uncovered. Engelbert Winter: “Apart from the architecture, small finds from the surrounding area also point to the existence of a church, such as the fragments of a marble table or the mentioning of a deacon attested by an inscription.”
City center discovered
The researchers have now also discovered the public center of the city of Doliche, which they had first located in the eastern part of the city by geophysical prospecting. “This assumption has been confirmed”, the excavation director explains. “We were able to uncover parts of a very large building: it is a public bath from the Roman Iron Age with well-preserved mosaics. Since hardly any Roman thermal baths are known so far in the region, this discovery is of great academic importance.” The research team from Münster also gained new insights to the extension of the urban area and the chronology of the city: an intensive survey carried out this year on the settlement hill of the ancient city, Keber Tepe, led to quite surprising results. “A large number of finds from the Stone Age indicate that Keber Tepe was obviously an extremely important place very early on. Doliche reached its greatest extent later, in the Roman and early Byzantine periods.”
Excavation director Winter says about the large number of discovered sealings: “Many sealings can be attributed to the administrative or official seals of the city due to their size, frequent occurrence, and in some cases also due to inscriptions. In addition to the images of the ‘city goddess’ Tyche, the depictions of Augustus and Dea Roma deserve special attention, since they point to the important role of the Roman emperor and the personified goddess of the Roman state for the town of Doliche, which lies on the eastern border of the Roman Empire. However, the central motif is the most important god of the city, Iuppiter Dolichenus. In the 2nd and 3rd centuries AD, his cult spread into large parts of the Mediterranean world, extending as far as Britain”, explains Prof. Winter. Therefore, it is not surprising that hundreds of documents were sealed with images showing a handshake between this deity and an emperor. “It was a sign of the god’s affinity to the Roman state.”
The images also provide insights into the cult itself. In addition to sealings showing busts of Iuppiter and his wife Iuno, there are depictions of the divine twins Castor and Pollux, the sons of Zeus. “The sons of Zeus, also known as Dioscuri or Castores Dolicheni, are often portrayed as companions of Iuppiter and therefore play an important role in the cult”, Prof. Winter explains.
Archaeological park for tourists
Under the supervision of Prof. Winter from the Cluster of Excellence “Religion and Politics”, the Asia Minor Research Centre of the University of Münster has been excavating the main temple of Iuppiter Dolichenus with the support of the German Research Foundation (Deutsche Forschungsgemeinschaft, DFG) since 2001. Each year, the international group of archaeologists, historians, architects, restorers, archaeozoologists, GIS analysts and excavation assistants have uncovered finds from all periods of the 2,000-year history of the place of worship. Among them were the massive foundations of the first Iron Age sanctuary, numerous monumental architectural fragments of the Roman main temple, but also the extensive ruins of an important Byzantine monastery which was built by followers of the Christian faith after the fall of the ancient sanctuary. In order to make the excavation site near the ancient town of Doliche accessible to a broad public, an archaeological park is being developed. Prof. Winter’s research project at the Cluster of Excellence “Religion and Politics” is closely connected with the excavation. It is titled “Syriac Cults in the Western Imperium Romanum”. (maz/vvm)
_____________________________________
Sealings from the archive of Doliche. Asia Minor Research Centre
Receive 30 days free access to the popular new CuriosityStream lineup of documentaries on science, history, nature, and technology as a new Popular Archaeology premium subscriber.
MAX PLANCK INSTITUTE FOR THE SCIENCE OF HUMAN HISTORY—Most people are now familiar with the traditional “Out of Africa” model: modern humans evolved in Africa and then dispersed across Asia and reached Australia in a single wave about 60,000 years ago. However, technological advances in DNA analysis and other fossil identification techniques, as well as an emphasis on multidisciplinary research, are revising this story. Recent discoveries show that humans left Africa multiple times prior to 60,000 years ago, and that they interbred with other hominins in many locations across Eurasia.
A review of recent research on dispersals by early modern humans from Africa to Asia by researchers from the Max Planck Institute for the Science of Human History and the University of Hawai’i at Manoa confirms that the traditional view of a single dispersal of anatomically modern humans out of Africa around 60,000 years ago can no longer be seen as the full story. The analysis, published in the journal Science, reviews the plethora of new discoveries being reported from Asia over the past decade, which were made possible by technological advances and interdisciplinary collaborations, and shows that Homo sapiens reached distant parts of the Asian continent, as well as Near Oceania, much earlier than previously thought. Additionally, evidence that modern humans interbred with other hominins already present in Asia, such as Neanderthals and Denisovans, complicates the evolutionary history of our species.
New model: Multiple dispersals of modern humans out of Africa, beginning as early as 120,000 years ago
The authors brought together findings from multiple recent studies to refine the picture of human dispersals out of Africa and into Asia. While scientists once thought that humans first left Africa in a single wave of migration about 60,000 years ago, recent studies have identified modern human fossils in far reaches of Asia that are potentially much older. For example, H. sapiens remains have been found at multiple sites in southern and central China that have been dated to between 70,000 and 120,000 years ago. Additional finds indicate that modern humans reached Southeast Asia and Australia prior to 60,000 years ago.
However, other recent studies do confirm that all present-day non-African populations branched off from a single ancestral population in Africa approximately 60,000 years ago. This could indicate that there were multiple, smaller dispersals of humans out of Africa beginning as early as 120,000 years ago, followed by a major dispersal 60,000 years ago. While the recent dispersal contributed the bulk of the genetic make-up of present-day non-Africans, the earlier dispersals are still evident.
“The initial dispersals out of Africa prior to 60,000 years ago were likely by small groups of foragers, and at least some of these early dispersals left low-level genetic traces in modern human populations. A later, major ‘Out of Africa’ event most likely occurred around 60,000 years ago or thereafter,” explains Michael Petraglia of the Max Planck Institute for the Science of Human History.
Multiple interbreeding events
Recent genetic research has resolved the question of whether or not modern humans interbred with other ancient hominins – they definitely did. Modern humans interbred not only with Neanderthals, but also with our recently-discovered relatives the Denisovans, as well as a currently unidentified population of pre-modern hominins. One estimate is that all present-day non-Africans have 1-4% Neanderthal heritage, while another group has estimated that modern Melanesians have an average of 5% Denisovan heritage. In all, it is now clear that modern humans, Neanderthals, Denisovans and perhaps other hominin groups likely overlapped in time and space in Asia, and they certainly had many instances of interaction.
The increasing evidence of interactions suggests that the spread of material culture is also more complicated than previously thought. “Indeed, what we are seeing in the behavioral record is that the spread of so-called modern human behaviors did not occur in a simple time-transgressive process from west to east. Rather, ecological variation needs to be considered in concert with behavioral variation between the different hominin populations present in Asia during the Late Pleistocene,” explains Christopher Bae of the University of Hawai’i at Manoa.
In light of these new discoveries, our understanding of human movements across the Old World has become much more complex, and there are still many questions left open. The authors argue for the development of more complicated models of human dispersals and for conducting new research in the many areas of Asia where none has been done to date. Additionally, it will be important to review materials collected prior to the development of modern analytic methods, to see what more can now be learned from them. “Fortunately,” states Katerina Douka, also of the Max Planck Institute for the Science of Human History, “there have been an increasing number of multidisciplinary research programs launched in Asia over the past few decades. The information that is being reported is helping to fill in the gaps in the evolutionary records.”
“It is an exciting time to be involved with interdisciplinary research projects across Asia,” adds Bae.
_____________________________________
Map of sites and postulated migratory pathways associated with modern humans dispersing across Asia during the Late Pleistocene. Credit: Bae et al. 2017. On the origin of modern humans: Asian perspectives. Science. Image by: Katerina Douka and Michelle O’Reilly
Receive 30 days free access to the popular new CuriosityStream lineup of documentaries on science, history, nature, and technology as a new Popular Archaeology premium subscriber.
PURDUE UNIVERSITY, WEST LAFAYETTE, Ind.—Researchers, led by a Purdue University anthropology professor, have found that statistical methods and 3D imaging can be used to accurately measure animal bone cut marks made by prehistoric human butchery, and to help answer pressing questions about human evolution.
Archaeologist and biostatistician Erik Otárola-Castillo leads the research team that used 3-D imaging, shape analysis and Bayesian statistics to identify butchery cut marks with an 88 percent success rate in classifying butchery behaviors. The 3-D imaging technology is similar to what engineers use to measure scratches on microchips and surgical blade sharpness.
“This approach represents a major improvement in accuracy when compared to many archaeological methods, and improving this technique will help us get the human evolution story correct,” Otárola-Castillo said. “By strengthening quantitative methods to evaluate archaeological evidence, we will be able to learn more about early humans much more quickly.”
The findings are published in the Journal of Archaeological Science. Otárola-Castillo is an assistant professor of the Department of Anthropology.
“In archaeology, butchery marks on animal bones are a key piece of evidence used to answer questions about food acquisition in prehistoric hunter and gatherer populations,” said Otárola-Castillo, who studies hunters-gatherers’ diets to answer questions about human evolution. His expertise spans North American hunters-gatherers archaeology, evolutionary biology, statistics and computational modeling.
Human-made stone tools leave cut marks on animal bone, such as sheep, deer or bison, through butchery. These cut marks can vary in size from 1 to 5 centimeters, but the depth of the cuts is often tiny, measuring at approximately 1/15 of a millimeter. Archaeologists often attempt to distinguish between cut marks made by a human’s stone tool, which leaves a “V” shape, and other damage, such as trampling by a hooved animal, which can leave marks with more of a “U” shape.
Archaeologists have attempted to identify butchering marks since the 1800s. While the methods of analyzing bone marks have improved over the decades, there is still quite a lot of uncertainty and lack of consensus on how they are best measured. Current measurement techniques range from naked eye qualitative assessments to high-powered microscopy, such as scanning electron microscopy or micro-photogrammetry.
Otárola-Castillo and research teammates Emma James from The University of Queensland; Curtis W. Marean from Arizona State University; and Jessica C. Thompson from Emory University, specialize in evaluating cut marks on bone.
There are cases when marks can be ambiguous. In 2010, a couple of research teams published contradicting findings regarding bone marks from a prehistoric site, Dikika in Ethiopia. Results from their analyses varied so much they disagreed whether the marks were made by humans’ tools or animals’ hooves, or perhaps scratched by sand particles or other rock edges. Fresh debate now contends that some of these marks could have been made by feeding crocodiles.
“The tension over this debate has been great, because the source of the cuts matters significantly. If made by stone tools, then this is an example of stone tool-use by some of the earliest human ancestors,” Otárola-Castillo said. “Recently, researchers sent bones with cut marks to various experts for analysis. The goal was to evaluate the convergence of different experts’ assessments of the characteristics of the bone marks using traditional methods. Alarmingly, results showed that the qualitative assessments were inconsistent between all experts. Similar concerns also relate to modern forensics evidence, so our work is a finding that may be of interest to that field as well.”
Otárola-Castillo, Marean, Thompson, and Shannon P. McPherron from the Max Planck Institute for Evolutionary Anthropology, began working on methodological improvements for bone mark analysis in 2010. Other team members are Jacob A. Harris from Arizona State University, Purdue graduate student Melissa G. Torquato and Purdue undergraduate student Hannah C. Hawkins. McPherron and Marean were members of one of the teams evaluating bones from the Dikika site in Ethiopia.
In their new study, Otárola-Castillo and the team used more than 40 cuts and slices made by volunteer butchers on sheep bones using stone tools. A “cut” represents a 90-degree incision angle, and a “slice” represents a 45-degree incision angle. The researchers then measured the cuts with a profilometer, a 3-D microscope that measures topography, roughness and layer thickness in the micro- and nanometer ranges. After measuring them, the researchers conducted a 3-D shape and size analysis of the curves and surfaces to compare the cut marks.
“Once the digital data were compared, we used Bayesian statistics, which provide a quantitative measure of scientific believability. For example, given the evidence, the probability of accurately determining the identity of a mark on a bone is 88 percent in this case,” Otárola-Castillo said.
__________________________________
Archaeologist and biostatistician Erik Otárola-Castillo leads the research team that used 3-D imaging, shape analysis and Bayesian statistics to identify butchery cut marks with an 88 percent success rate in classifying butchery behaviors. The 3D imaging technology is similar to what engineers use to measure scratches on microchips and surgical blade sharpness. The findings are published in the Journal of Archaeological Science.Purdue University photo/Mark Simons
This research was funded by a variety of sources, including the National Science Foundation, Margo Katherine Wilke Undergraduate Research Fund at Purdue University, Purdue’s College of Liberal Arts ASPIRE, and a grant from the John Templeton Foundation to the Institute of Human Origins at Arizona State University. Purdue’s Department of Anthropology is housed in the College of Liberal Arts.
______________________________________________
Receive 30 days free access to the popular new CuriosityStream lineup of documentaries on science, history, nature, and technology as a new Popular Archaeology premium subscriber.
April 14 — April 26, 2027. Join Popular Archaeology Magazine and EF Go Ahead Tours for the trip of a lifetime to ancient Egypt. See, in person, the most spectacular and iconic sites and treasures of Egypt. Visit the website for more information!
Experience a unique, up-close-and-personal hike among ancient hilltop towns in central Italy. You will walk the sensational countryside of the regions of Umbria and Tuscany, soaking in important sites attesting to the advanced Etruscan civilization, forerunners of the ancient Romans; imposing architectural and cultural remains of Medieval Italy; local food and drink; and perhaps best of all — spectacular scenic views!Join usin this collaborative event for the trip of a lifetime!
WHO WERE THE AEGEANS? The exciting new podcast series exploring the mysteries of the ancient Aegeans, the Bronze Age people who inspired Homer's epic stories of the Iliad and the Odyssey.
