Old Traditions
Ancient genomes reveal insights into ritual life at Chichén Itzá
Rodrigo Barquera et al.
Nature, forthcoming
Abstract:
The ancient city of Chichén Itzá in Yucatán, Mexico, was one of the largest and most influential Maya settlements during the Late and Terminal Classic periods (AD 600–1000) and it remains one of the most intensively studied archaeological sites in Mesoamerica. However, many questions about the social and cultural use of its ceremonial spaces, as well as its population’s genetic ties to other Mesoamerican groups, remain unanswered. Here we present genome-wide data obtained from 64 subadult individuals dating to around AD 500–900 that were found in a subterranean mass burial near the Sacred Cenote (sinkhole) in the ceremonial centre of Chichén Itzá. Genetic analyses showed that all analysed individuals were male and several individuals were closely related, including two pairs of monozygotic twins. Twins feature prominently in Mayan and broader Mesoamerican mythology, where they embody qualities of duality among deities and heroes, but until now they had not been identified in ancient Mayan mortuary contexts. Genetic comparison to present-day people in the region shows genetic continuity with the ancient inhabitants of Chichén Itzá, except at certain genetic loci related to human immunity, including the human leukocyte antigen complex, suggesting signals of adaptation due to infectious diseases introduced to the region during the colonial period.
Inequalities in wealth distribution within Imperial Assyrian graves
Petra Creamer
Antiquity, forthcoming
Abstract:
Across more than seven centuries (c. 1350–600 BC), the Assyrian Empire established political dominance and cultural influence over many settlements in the Ancient Near East. Assyrian policies of resource extraction, including taxation and tribute, have been extensively analysed in textual and art historical sources. This article assesses the impact of these policies on patterns of wealth within mortuary material -- one of the most conservative forms of culture, deeply rooted in group identity. The author argues that a trend of decreasing quality and quantity of grave goods over time supports models emphasising the heavy economic burden of Assyrian administration on its subjects.
Herding with the Hounds: The Game of Fifty-eight Holes in the Abşeron Peninsula
Walter Crist & Rahman Abdullayev
European Journal of Archaeology, forthcoming
Abstract:
The game of fifty-eight holes is one of the longest recognized games of antiquity, but also one of the least understood. New evidence from the Caspian littoral points to an early adoption of the game by Middle Bronze Age seasonally pastoral cattle herders in the late third millennium and early second millennium BC. Six boards bearing this game's distinct pattern were found at sites on the Abşeron Peninsula and Gobustan Reserve in Azerbaijan. Their presence there not only indicates that the region was connected to societies to the south, but also demonstrates the game's popularity across cultures and socioeconomic groups. Its supposed first appearance in Egypt is questioned in favour of a south-western Asian origin.
A Light in Dark Places: Later Prehistoric Mortuary Activity in Caves in Scotland and Northern England
Ben Hume & Ian Armit
Proceedings of the Prehistoric Society, forthcoming
Abstract:
Humans have utilised caves for funerary activities for millennia and their unique preservational conditions provide a wealth of evidence for treatments of the dead. This paper examines the evidence for funerary practices in the caves of Scotland and northern England from the Bronze Age to the Roman Iron Age (c. 2200 BC–AD 400) in the context of later prehistoric funerary ritual. Results suggest significant levels of perimortem trauma on human skeletal remains from caves relative to those from non-cave sites. We also observe a recurrent pattern of deposition involving inhumation of neonates in contrast to excarnation of older individuals.
Diversity-dependent speciation and extinction in hominins
Laura van Holstein & Robert Foley
Nature Ecology & Evolution, June 2024, Pages 1180–1190
Abstract:
The search for drivers of hominin speciation and extinction has tended to focus on the impact of climate change. Far less attention has been paid to the role of interspecific competition. However, research across vertebrates more broadly has shown that both processes are often correlated with species diversity, suggesting an important role for interspecific competition. Here we ask whether hominin speciation and extinction conform to the expected patterns of negative and positive diversity dependence, respectively. We estimate speciation and extinction rates from fossil occurrence data with preservation variability priors in a validated Bayesian framework and test whether these rates are correlated with species diversity. We supplement these analyses with calculations of speciation rate across a phylogeny, again testing whether these are correlated with diversity. Our results are consistent with clade-wide diversity limits that governed speciation in hominins overall but that were not quite reached by the Australopithecus and Paranthropus subclade before its extinction. Extinction was not correlated with species diversity within the Australopithecus and Paranthropus subclade or within hominins overall; this is concordant with climate playing a greater part in hominin extinction than speciation. By contrast, Homo is characterized by positively diversity-dependent speciation and negatively diversity-dependent extinction -- both exceedingly rare patterns across all forms of life. The genus Homo expands the set of reported associations between diversity and macroevolution in vertebrates, underscoring that the relationship between diversity and macroevolution is complex. These results indicate an important, previously underappreciated and comparatively unusual role of biotic interactions in Homo macroevolution, and speciation in particular. The unusual and unexpected patterns of diversity dependence in Homo speciation and extinction may be a consequence of repeated Homo range expansions driven by interspecific competition and made possible by recurrent innovations in ecological strategies. Exploring how hominin macroevolution fits into the general vertebrate macroevolutionary landscape has the potential to offer new perspectives on longstanding questions in vertebrate evolution and shed new light on evolutionary processes within our own lineage.