Going Back Millennia
Surgical amputation of a limb 31,000 years ago in Borneo
Tim Ryan Maloney et al.
Nature, forthcoming
Abstract:
The prevailing view regarding the evolution of medicine is that the emergence of settled agricultural societies around 10,000 years ago (the Neolithic Revolution) gave rise to a host of health problems that had previously been unknown among non-sedentary foraging populations, stimulating the first major innovations in prehistoric medical practices. Such changes included the development of more advanced surgical procedures, with the oldest known indication of an ‘operation’ formerly thought to have consisted of the skeletal remains of a European Neolithic farmer (found in Buthiers-Boulancourt, France) whose left forearm had been surgically removed and then partially healed. Dating to around 7,000 years ago, this accepted case of amputation would have required comprehensive knowledge of human anatomy and considerable technical skill, and has thus been viewed as the earliest evidence of a complex medical act. Here, however, we report the discovery of skeletal remains of a young individual from Borneo who had the distal third of their left lower leg surgically amputated, probably as a child, at least 31,000 years ago. The individual survived the procedure and lived for another 6–9 years, before their remains were intentionally buried in Liang Tebo cave, which is located in East Kalimantan, Indonesian Borneo, in a limestone karst area that contains some of the world’s earliest dated rock art. This unexpectedly early evidence of a successful limb amputation suggests that at least some modern human foraging groups in tropical Asia had developed sophisticated medical knowledge and skills long before the Neolithic farming transition.
Human TKTL1 implies greater neurogenesis in frontal neocortex of modern humans than Neanderthals
Anneline Pinson et al.
Science, 9 September 2022
Abstract:
Neanderthal brains were similar in size to those of modern humans. We sought to investigate potential differences in neurogenesis during neocortex development. Modern human transketolase-like 1 (TKTL1) differs from Neanderthal TKTL1 by a lysine-to-arginine amino acid substitution. Using overexpression in developing mouse and ferret neocortex, knockout in fetal human neocortical tissue, and genome-edited cerebral organoids, we found that the modern human variant, hTKTL1, but not the Neanderthal variant, increases the abundance of basal radial glia (bRG) but not that of intermediate progenitors (bIPs). bRG generate more neocortical neurons than bIPs. The hTKTL1 effect requires the pentose phosphate pathway and fatty acid synthesis. Inhibition of these metabolic pathways reduces bRG abundance in fetal human neocortical tissue. Our data suggest that neocortical neurogenesis in modern humans differs from that in Neanderthals.
Evidence supports the efficacy of Clovis points for hunting proboscideans
David Kilby et al.
Journal of Archaeological Science: Reports, forthcoming
Abstract:
Clovis projectile points are found in association with mammoths and other proboscideans at multiple sites from across much of North America. The conventional, and arguably parsimonious, explanation for this association is that Clovis points were weapons used to hunt the animals with which they were found. Recently, Eren et al. (2021) argued that experimental data coupled with estimations of mammoth anatomy indicate that Clovis points would not have been effective for proboscidean hunting and were more likely used as cutting tools for scavenging carcasses. We find a number of weaknesses in their argument, including their estimations of mammoth anatomy, the validity of their experimental design, and their assumptions regarding Clovis hunting behavior. We evaluate their argument in light of ethnographic, experimental, and archaeological data and conclude that each of these datasets strongly supports the interpretation of Clovis points as weapons designed for use in hunting large animals, including proboscideans.
Conquest and revival at Chiantla Viejo: The transition of a highland Maya community to Spanish colonial rule
Victor Castillo
Antiquity, forthcoming
Abstract:
Colonised societies often continue traditional practices in private contexts whilst adopting new forms of ritual in public. Excavations at the Mam centre of Chiantla Viejo in highland Guatemala, however, reveal a more complex picture. Combining archaeological evidence with early colonial documents, the author identifies a revival of Indigenous Maya religion following the Spanish conquest (AD 1525–1550). Despite appearing in colonial records as Christian converts, the Maya directed a sequence of destruction, reconstruction and remodelling of the monumental core of Chiantla Viejo to evoke the landscape of their ancestral settlement of Zaculeu. The results emphasise the importance of public spaces for the persistence of Indigenous religion in early colonial settings.
The genomic history and global expansion of domestic donkeys
Evelyn Todd et al.
Science, 9 September 2022, Pages 1172-1180
Abstract:
Donkeys transformed human history as essential beasts of burden for long-distance movement, especially across semi-arid and upland environments. They remain insufficiently studied despite globally expanding and providing key support to low- to middle-income communities. To elucidate their domestication history, we constructed a comprehensive genome panel of 207 modern and 31 ancient donkeys, as well as 15 wild equids. We found a strong phylogeographic structure in modern donkeys that supports a single domestication in Africa ~5000 BCE, followed by further expansions in this continent and Eurasia and ultimately returning to Africa. We uncover a previously unknown genetic lineage in the Levant ~200 BCE, which contributed increasing ancestry toward Asia. Donkey management involved inbreeding and the production of giant bloodlines at a time when mules were essential to the Roman economy and military.
Revisiting Late Pleistocene-Early Holocene mountain gazelle (Gazella gazella) body size change in the southern Levant: A case for anthropogenic impact
Natalie Munro, Roxanne Lebenzon & Lidar Sapir-Hen
PLoS ONE, August 2022
Abstract:
The average body size of human prey animals in archaeological sites is influenced by myriad environmental, physiological and anthropogenic variables. When combined with supporting evidence, body size has the potential to provide a proxy for several variables of fundamental interest to archaeologists including climatic change, food availability and hunting impacts, among other things. In the southern Levant changes in mountain gazelle (Gazella gazella) body size in the Late Pleistocene were initially interpreted as evidence for a climatic downturn, but the picture has become increasingly murky as data has grown. Here we reconsider trends in gazelle body size using an updated dataset from the Mediterranean zone that spans the Early Epipaleolithic to the Middle Pre-Pottery Neolithic B period (ca. 24,000–9,500 cal BP). Our results reveal that gazelle were smallest in the Early and Middle Epipaleolithic (Kebaran and Geometric Kebaran), reached their largest size in the early Late Epipaleolithic (Early Natufian) and then shrunk slightly before stabilizing in size through the Middle Pre-Pottery Neolithic. We see no evidence that sex ratio, or climatic factors influenced this trend. Instead, we explore the role of human impacts on gazelle populations and their habitats as they grew in earnest at the beginning of the Late Epipaleolithic when people first began to settle into more permanent communities. Initially, in the Early and Late Natufian, anthropogenic impacts related to more intensive hunting and the increased footprint of more permanent settlements on the landscape. This may have pushed gazelle numbers below what could be supported by the environment, thus increasing the amount of food available for each animal and hence average body size. Later, as humans began to cultivate plants, manage animals and establish permanent villages, avoidance of humans and livestock by gazelle, and greater stability in food and water availability provided by agriculture, may have similarly reduced gazelle population size and intraspecific competition, thus allowing individual animals to grow larger on average.
A rock art tradition of life-sized, naturalistic engravings of camels in Northern Arabia: New insights on the mobility of Neolithic populations in the Nafud Desert
Guillaume Charloux et al.
Antiquity, forthcoming
Abstract:
Among the rock art in Arabia, a little-known Neolithic tradition of large, naturalistic camel depictions stands out. Their geographic distribution and stylistic traits suggest close links with the Camel Site reliefs. Four newly documented panels appear to have been carved by the same individual (or group), tracing repeated movements over hundreds of kilometres.