Friday, January 17, 2025

Australopithecines at South African cave site were not eating substantial amounts of meat

 

Peer-Reviewed Publication

American Association for the Advancement of Science (AAAS)

Seven Australopithecus specimens uncovered at the Sterkfontein fossil site in South Africa were herbivorous hominins who did not eat substantial amounts of meat, according to a new study by Tina Lüdecke and colleagues. Lüdecke et al. analyzed organic nitrogen and carbonate carbon isotopes extracted from tooth enamel in the fossil specimens to determine the hominin diets. Some researchers have hypothesized that the incorporation of animal-based foods in early hominin diets led to increased brain size, smaller gut size and increased stature – all key events in human evolution. Cut and scraped bones and some stone tools from the same time period (around 3.7 million years ago) offer hints that australopithecines were eating some meat, but there has been a lack of direct evidence for an animal diet. 

The researchers analyzed enamel nitrogen isotope measurements from 43 animal fossils, including the australopithecines, and modern African mammals to characterize these isotopes in known carnivores and herbivores. They found a clear separation in the enamel isotopes between the two groups, with the Australopithecus enamel significantly similar to that of the herbivore group. It’s possible, the researchers note, that the australopithecines were eating energy-rich foods with low nitrogen isotope ratios, like legumes or possibly termites. But it’s unlikely that they were eating enough meat to drive changes in brain size and other characteristics that are hallmarks of human evolution, Lüdecke et al. conclude.

Thursday, January 16, 2025

Ancient genomes show integration of genetically different groups tin early medieval Austria


Facebook

Avar-period cloak clasp 

image: 

An Avar-period cloak clasp from a female grave at Moedling, Austria. Archers were associated with a higher social status.

view more 

Credit: © Benedict Seidl, benedicts.1995@gmail.com



Research combining expertise of various disciplines found that genes and culture do not have to match. The latest findings from the European Research Council project HistoGenes emerged from a genetic study of burial grounds from the Avar period in the 8th century CE. The Avars had arrived in the 6th century from the East Asian Steppes and settled in East Central Europe among a mixed population.

Despite their rich archaeological heritage, many questions remained. Were the people buried in these sites descendants of the Avar conquerors or of the previous population that was integrated into the Avar society? Or had these two groups long since mixed, as many expected? The analysis of two large sites south of Vienna, of 500 graves in Mödling and almost 150 in Leobersdorf, brought unexpected results.

When the researchers looked at the ancient DNA extracted from the human remains from these neighbouring sites, they were very surprised. While the population of Leobersdorf was mostly of East Asian origin, those buried in Mödling had ancestry associated with European populations. “The genetic difference between these groups was very clear and consistent for most individuals at the sites,” says Ke Wang, a geneticist and one of the lead authors of the study.

Before genetic analysis, no large difference between the sites had been observed. The archaeological remains of the two communities and their way of life were very similar. "The cultural integration apparently worked despite major genetic differences, and these people were obviously regarded as Avars," says Walter Pohl from the Austrian Academy of Sciences, a historian and one of the senior authors of the study.

Peaceful coexistence

The historical records agree with the evidence from anthropology and archaeology that this was one of the most peaceful times in the history of the Vienna Basin, in spite of the reputation of the Avars as warriors. "We find no battle injuries on the skeletons and there are hardly any signs of deficiencies," explains Doris Pany-Kucera, anthropologist at the Natural History Museum Vienna and one of the lead authors of the study. Also, weapons were only occasionally placed in the graves.

Thanks to the sampling strategy and highly sensitive genetic analysis, it was possible to discover a high number of relatives among the deceased. “The large number of genetic relationships between the individuals allowed us to reconstruct contemporary six-generation-long pedigrees at each site,” says Zuzana Hofmanová from the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany and Masaryk University in Brno, Czechia, a geneticist and one of the senior lead authors of the study.

Only exceptionally, the individuals had no biological connection to anybody else at their burial ground. Yet, the researchers found no consanguineous relationships even between distant relatives. Interestingly, they were able to determine that almost none of the mothers had local ancestors: they must therefore have come from other regions and other communities. However, there were hardly any genetic connections between Mödling and Leobersdorf.

Both communities followed a similar social practice in choosing partners from certain other communities, through which their different ancestry was preserved: the women that became mothers in Leobersdorf apparently came from communities that also descended from East Asia (possibly from the centre of the Avar realm), while in Mödling they were of European descent. Yet they did not differ in status or wealth. "Status symbols such as belt fittings depicting griffins, and their culture and customs were the same. Most likely both considered themselves Avars," says Bendeguz Tobias, an archeologist and one of the lead authors of the study.

Such large studies that systematically investigate burial grounds are still rare in the field. “Mödling burial ground is one of the largest ever analyzed genetically, and such results hold a lot of potential for future research in various disciplines,” says Johannes Krause, director at the Max Planck Institute for Evolutionary Anthropology and one of the senior authors of the study.

How animals, people, and rituals created Teotihuacán

 

The remains of nearly 200 animals found in Mexico’s Teotihuacán are helping reconstruct history.


The unearthing and significance of these remains, found in four chambers within the Moon Pyramid — dating back nearly 2,000 years — are central in Nawa Sugiyama’s new book, “Animal Matter: Ritual, Place, and Sovereignty at the Moon Pyramid of Teotihuacan,” published by Oxford University Press. 

Teotihuacán, one of the first megacities of the Western Hemisphere and now a UNESCO World Heritage site, is situated about 30 miles northeast of Mexico City. It is home to one of the most important ceremonial landscapes in Mesoamerica and was once the most influential metropolis in the region. Nearly 2,000 years later, Sugiyama, an assistant professor of anthropology at UC Riverside, joined the team that uncovered four dedicatory chambers with nearly 200 animal remains. 

In the largest chamber, measuring approximately 16-feet by 14-feet and known as burial 6, the team found 12 human remains along with over 100 animals, including 33 complete animal remains. This is believed to be one of the most abundant cases of mass animal sacrifice ever found in Teotihuacán and comparable only to those conducted by the Aztec empire over 1000 years later. 

Animals were major protagonists in Teotihuacán since they were gifted, sacrificed, or venerated, Sugiyama said. Most were apex predators, meaning top predators within the food chain.

“That’s really interesting from the zooarchaeology standpoint because there’s a fundamental shift in the ways we know Indigenous communities understood these potent apex predators as active agents and mediators of the sky realm, the earth, and the underworld,” Sugiyama said. “They were also in conversation with and interacting, sometimes in very dangerous ways, with the human communities that were trying to make connections to — and have power over —these natural sources of power themselves.”

Studying the bones using multi-archaeometric methodologies, including zooarchaeology and isotopes (bone chemistry), Sugiyama uncovered many details of these animal’s lives, including sex, diet, age, and whether they were sacrificed dead or alive. One common denominator she found in their diet was maize, or corn; in addition to maize serving as the primary staple food in Mesoamerica, many civilizations believed humans were created from maize and the crop served an important process in cultural and religious practices.   

“I don’t think it’s a mere coincidence, they were part of that process of creating a new politics, a new landscape, in which animals and humans coordinated one of the most ambitious ceremonial landscape constructions in ancient Mesoamerica,” Sugiyama said. 

Analyzing animal matter has allowed Sugiyama to recreate parts of the lives of animals such as golden eagles, Mexican gray wolves, hawks, owls, and falcons. The team also found evidence of jaguars, pumas, wolves, and rattlesnakes. 

Burial 6, the largest dedicatory chamber found, must have once been a “State spectacle,” witnessed by thousands of people, Sugiyama said. Sacrifices were government-sanctioned ritual performances staged at the heart of the Moon Pyramid. Teotihuacán thrived between 100 B.C. and 650 A.D., more than 1,000 years before the eminent Aztec civilization settled in. At its height, 100,000 people inhabited the metropolis.    

One of the stories lifted from the soils of ancient Teotihuacán is the importance of the golden eagle, an animal still held in high regard today. 

Sugiyama’s unearthing of 18 golden eagles in burial 6, representing one for each of the 18 months in Teotihuacán’s 365-day calendar, allows her to reimagine what the dedicatory ceremony would have looked like nearly 2,000 years ago. Sugiyama suggests the birds were carried by State officials on their forearm or shoulder (or some in captivity) through Teotihuacán’s main corridor leading to the endpoint, the Moon Pyramid, known as the Calzada de los Muertos or Avenue of the Dead. 

Today, golden eagles are still incorporated in national customs, such as the annual Mexican Independence Parade when a Mexican cadet parades to the city’s federal building, known as Zócalo, with a golden eagle standing on his forearm. 

“We are able to see the matter in which ancient Teotihuacanos materialized, felt, heard, created space, and understood their cosmos directly through the messages that are provided to us archeologists through the material remains of the bones that are speaking to us 2,000 years later,” Sugiyama said.


Wednesday, January 15, 2025

Roman urbanites followed medical recommendations for weaning babies

 


Babies were weaned earlier in cities in the Roman Empire than in smaller and more rural communities, according to a study of ancient teeth. Urban weaning patterns more closely hewed to guidelines from ancient Roman physicians, mirroring contemporary patterns of adherence to medical experts in urban and rural communities.

Roman health authorities recommended breastfeeding babies for two years. Carlo Cocozza and colleagues were interested in how ancient Romans actually fed their babies in varying settlement types. Carbon and nitrogen isotope ratios in dentine from the first permanent molars record diet from three months to about nine years of age. In particular, breast milk has a high nitrogen-15 to nitrogen-14 ratio, compared to solid foods, allowing researchers to estimate weaning times. The authors gathered dental isotope data from several urban and nonurban locations across the Roman Empire. In general, people from Bainesse, UK, far from the heart of the empire, and Ostia, Italy, a rural suburb, were breastfed longer than urban people, with the majority of people from Thessaloniki, Greece, and Pompeii, Italy, being weaned at or before 2 years of age. The pattern mirrors contemporary urban/rural divides in terms of how closely people follow expert health guidelines, with cities functioning as information hubs and offering more medical resources.

 

Ancient artifacts unearthed in Iraq shed light on hidden history of Mesopotamia



New discoveries by a UCF researcher and her team at the ancient Mesopotamian site of Kurd Qaburstan, including clay tablets with ancient cuneiform writing, a game board and large structural remains, may provide a wealth of knowledge about this Middle Bronze Age city and shed light on the more hidden history of Mesopotamia.

The clay tablets are the first of their kind found in the region and are still being interpreted. Early findings indicate they provide a greater insight about the people who lived there and the significantly consequential events they encountered.

Tiffany Earley-Spadoni, an associate professor of history at UCF, and a team of researchers have been carefully uncovering culturally significant Middle Bronze Age (1800 BCE) discoveries at Mesopotamian site of Kurd Qaburstan, which is situated in the Erbil region in northeast Iraq.

A significant portion of human development and history may be traced back to the ancient civilization of Mesopotamia, in and around present-day Iraq.

The study of these new tablets could reveal important details about the city’s connections with its neighbors during the Middle Bronze Age and its historical significance. For example, by studying people’s names, word choice and writing styles, scholars may better understand literacy in the region and the city’s cultural identity, Earley-Spadoni says in her fieldwork summary.

A Hidden History

The Middle Bronze Age in northern Iraq is poorly understood due to limited prior research and the inherent biases of the available historical sources, she says.

“We hope to find even more historical records that will help us tell the story of [the city] from the perspective of its own people rather than relying only on accounts written by their enemies,” Earley-Spadoni says. “While we know a great deal about the development of writing in southern Iraq, far less is known about literacy in northern Mesopotamian cities, especially near Erbil where Kurd Qaburstan is located.”

Mesopotamia, with its dense network of ancient cities in the fertile plains along the Tigris and Euphrates rivers near the Persian Gulf, is often regarded as the birthplace of urban civilization. These cities, preserved as towering tells, mounds formed by centuries of accumulated cultural debris, have captivated scholars for generations.

“We know quite a bit about Mesopotamian cities in the south, and that's considered the traditional heartland of cities,” Earley-Spadoni says. “When people think about where cities first arose, they imagine cities in southern Iraq, like Uruk. We seek to fill in this gap in the scholarship by investigating a large urban site, one of the few that's ever been investigated in northern Iraq.”

New Areas Uncovered, New Questions Raised

Earley-Spadoni and researchers have been working in two primary areas: the northwest residential neighborhoods and a newly discovered administrative complex identified as a lower town palace, which was theorized to exist based on findings made in 2022.

Researchers used technologies such as magnetometry, which allows researchers to peer through the ground to see architectural plans, to help excavate the site.

The research is valuable its own right and helps shed light on regional history and worldwide heritage, she says.

“The focus of the research is the organization of ancient cities, and it's specifically the organization of Kurd Qaburstan,” Earley-Spadoni says. “You may have heard of King Hammurabi, who erected the famous law code. So, this is about that same time almost 4,000 years ago. We decided that this would be an interesting place to investigate what it was like to be an everyday person at a city during the Middle Bronze Age, which has been an understudied topic. People like to excavate palaces and temples, and very few residential areas have been excavated.”

Excavations in the palace revealed monumental architecture, human remains and evidence of destruction, suggesting a significant historical event. The complex, identified through geophysical surveys, is being excavated to establish its characteristics and better understand its function.

In the northwest neighborhoods, exterior courtyards, clay drainpipes, and household refuse were uncovered. Excavated pottery included everyday items such as cups, plates, bowls and storage jars. Some of the pottery was surprisingly well-decorated and carefully made, hinting that private wealth may have been more common than expected, Earley-Spadoni says in her fieldwork summary report.

Animal bones found with the pottery suggest that residents enjoyed a varied diet, including domesticated meat and wild game. This level of dietary diversity is unexpected for non-elite populations in Mesopotamian cities, based on limited current evidence.

These findings may challenge ideas about sharp divisions between elite and non-elite lifestyles in ancient cities. The material culture and dietary practices reflect a community where some people lived relatively well and suggests that further research and analysis is needed to answer lingering questions, Earley-Spadoni says.

“We’re studying this ancient city to learn very specific things about the ancient inhabitants,” she says. “First, to what degree did they plan their environment, or was it just the result of an organic process? We also want to know how social inequality worked in this ancient city. Were there very poor people and very rich people? Or was there possibly a middle class?”

Encouraging Findings and a Promising Future

The city’s historical importance could be even greater if it is identified as Qabra, a major regional center referenced in Old Babylonian monuments like the famed Stele of Dadusha, according to Earley-Spadoni.

There are many clues that give credence to the theory that Kurd Qaburstan was the prominent city of Qabra that has been referenced in Old Babylonian steles – or ancient monumental slabs. One such clue is that there are ample signs pointing to Kurd Qaburstan serving as a major regional administrative hub, she says.

“Kurd Qaburstan is believed to be ancient Qabra, an important regional center mentioned in the records of other city-states,” Earley-Spadoni says. “The presence of writing, monumental architecture, and other administrative artifacts in the lower town palace further supports this identification since the site must have been an important city of its time.”

The tablets are still being interpreted but there are some early encouraging findings that help illuminate the greater identity of the people of Kurd Qaburstan and the era they inhabited, she says.

“The first of the three tablets was discovered in a trash-filled deposit along with building rubble and human remains,” she says. “Its context suggests dramatic events, possibly evidence of ancient warfare. We hope our work in 2025 will tell us more about this story.” 

Tuesday, January 14, 2025

Ukraine was a crossroads of human mobility until around 500 years ago

 

Peer-Reviewed Publication

Estonian Research Council

thumbnail_Skorobir2013_IrynaShramko.jpg 

image: 

Scythian burial at the Skorobir necropolis in the fortified settlement of Bilski.

viewmore  

Credit: Iryna Shramko

Ukraine was a crossroads of human mobility until around 500 years ago

The North Pontic region, which encompasses present-day Ukraine, was for centuries a crossroads of migration from multiple directions, connecting the vast Eurasian Steppe with Central Europe.

A study recently published in Science Advances uses ancient human remains to reveal the remarkably high genetic heterogeneity in the region during the last 3,500 years up to around 500 years ago. The study is led by Lehti Saag, a researcher at the University of Tartu Institute of Genomics (UT IG) and a former Marie Skłodowska-Curie postdoctoral fellow at University College London (UCL), alongside professor Mark Thomas from UCL and Pontus Skoglund from the Francis Crick Institute. The study was made possible by the resilience of Ukrainian researchers – second author Olga Utevska who is currently a MSCA4Ukraine fellow at UT IG, and numerous archaeologists still actively conducting excavations in Ukraine despite the war.

The analyses show that at the end of the Bronze Age, broad-scale ancestry proportions are similar to contemporary populations in the rest of Europe – a mixture of European hunter-gatherer, Anatolian early farmer and Steppe pastoralist ancestries – and these ancestry components have been present in the Ukraine region since then until today. However, from the Early Iron Age until the Middle Ages, the appearance of eastern nomads in the Pontic region became a regular occurrence. Their genetic composition varied from Steppe-like superimposed on the locals to high degrees of East Asian ancestry with minimal local admixture.

At the same time, individuals from the rest of the Ukrainian region had ancestry mostly from different regions in Europe. The palimpsest created by migration and population mixing in the Ukraine region will have contributed to the high genetic heterogeneity in geographically, culturally and socially homogeneous groups, with different genetic profiles present at the same site, at the same time and among individuals with the same archaeological association.

World’s oldest 3D map discovered

 


World’s oldest 3D map discovered 

Caption

View of the three-dimensional map on the Ségognole 3 cave floor

Credit

Dr. Medard Thiry

Researchers have discovered what may be the world’s oldest three-dimensional map, located within a quartzitic sandstone megaclast in the Paris Basin.

The Ségognole 3 rock shelter, known since the 1980s for its artistic engravings of two horses in a Late Palaeolithic style on either side of a female pubic figuration, has now been revealed to contain a miniature representation of the surrounding landscape.

Dr Anthony Milnes from the University of Adelaide’s School of Physics, Chemistry and Earth Sciences, participated in the research led by Dr Médard Thiry from the Mines Paris – PSL Centre of Geosciences.

Dr Thiry’s earlier research, following his first visit to the site in 2017, established that Palaeolithic people had “worked” the sandstone in a way that mirrored the female form, and opened fractures for infiltrating water into the sandstone that nourished an outflow at the base of the pelvic triangle.

New research suggests that part of the floor of the sandstone shelter which was shaped and adapted by Palaeolithic people around 13,000 years ago was modelled to reflect the region’s natural water flows and geomorphological features.

“What we’ve described is not a map as we understand it today — with distances, directions, and travel times — but rather a three-dimensional miniature depicting the functioning of a landscape, with runoff from highlands into streams and rivers, the convergence of valleys, and the downstream formation of lakes and swamps,” Dr Milnes explains.

“For Palaeolithic peoples, the direction of water flows and the recognition of landscape features were likely more important than modern concepts like distance and time.

“Our study demonstrates that human modifications to the hydraulic behaviour in and around the shelter extended to modelling natural water flows in the landscape in the region around the rock shelter. These are exceptional findings and clearly show the mental capacity, imagination and engineering capability of our distant ancestors.”

Thanks to his extensive research on the origins of Fontainebleau sandstone, Dr Thiry recognised several fine-scale morphological features that could not have formed naturally, suggesting they were modified by early humans.

“Our research showed that Palaeolithic humans sculpted the sandstone to promote specific flow paths for infiltrating and directing rainwater which is something that had never been recognised by archaeologists,” Thiry says.

“The fittings probably have a much deeper, mythical meaning, related to water. The two hydraulic installations — that of the sexual figuration and that of the miniature landscape — are two to three metres from each other and are sure to relay a profound meaning of conception of life and nature, which will never be accessible to us.”

Milnes and Thiry’s latest study, published in Oxford Journal of Archaeology, discovered the presence of three-dimensional modelling by closely examining fine-scale geomorphological features.

“This completely new discovery offers a better understanding and insight into the capacity of these early humans,” Thiry says.

Before this discovery, the oldest known three-dimensional map was understood to be a large portable rock slab engraved by people of the Bronze Age around 3000 years ago. This map depicted a local river network and earth mounds, reflecting a more modern map concept used for navigation.

Dr Milnes says that collaborating across disciplines — such as archaeology, geology and geomorphology — is vital in science.

“We believe the most productive research outcomes are found at the boundaries between disciplines,” Dr Milnes says.

“Re-evaluating field studies and conducting frequent site visits are important. It’s clear from our ongoing project that insights and interpretations do not appear immediately but emerge through new observations and interdisciplinary discussions,” Dr Thiry suggests.