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Stone circles are a common monumental feature of the Mongolian Bronze Age (c. 1500–800BC), frequently occurring in association with other monument types, especially khirigsuurs. Until now the content of the stone circles has not been identified, a fact which has hampered our understanding not only of khirigsuurs and their related cosmology but also of the contemporary economy, owing to a research paradigm that was monument‐focused until very recently. The identification of domestic bovids in these features thus has profound implications for our approach to studying the society of this period and region. These implications, including a well‐developed cosmology and economy which included the ritual sacrifice of at least three different kinds of livestock, are introduced here. Copyright © 2014 John Wiley & Sons, Ltd.

From the American West to the steppes of Eurasia, the domestic horse transformed human societies, providing rapid transport, communication, and military power, and serving as an important subsistence animal. Because of the importance of oral equipment for horse riding, dentistry is an essential component of modern horse care. In the open grasslands of northeast Asia, horses remain the primary form of transport for many herders. Although free-range grazing on gritty forage mitigates many equine dental issues, contemporary Mongolian horsemen nonetheless practice some forms of dentistry, including the removal of problematic deciduous teeth and the vestigial first premolar ("wolf tooth"). Here, we present archaezoological data from equine skeletal remains spanning the past 3,200 y, indicating that nomadic dental practices have great antiquity. Anthropogenic modifications to malerupted deciduous central incisors in young horses from the Late Bronze Age demonstrate their attempted removal, coinciding with the local innovation or adoption of horseback riding and the florescence of Mongolian pastoral society. Horse specimens from this period show no evidence of first premolar removal, which we first identify in specimens dating to 750 BCE. The onset of premolar extraction parallels the archaeological appearance of jointed bronze and iron bits, suggesting that this technological shift prompted innovations in dentistry that improved horse health and horse control. These discoveries provide the earliest directly dated evidence for veterinary dentistry, and suggest that innovations in equine care by nomadic peoples 1150 BCE enabled the use of horses for increasingly sophisticated mounted riding and warfare.

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