PLEISTOCENE EQUUS (EQUIDAE: MAMMALIA) FROM NORTHERN BRAZIL: EVIDENCE OF SCAVENGER BEHAVIOR BY URSIDS ON SOUTH AMERICAN HORSES

Leonardo Santos Avilla, Helena Machado, Herminio Ismael de Araujo-Junior, Dimila Mothe, Alline Rotti, Karoliny de Oliveira, Victoria Maldonado, Ana Maria Graciano Figueiredo, Angela Kinoshita, Oswaldo Baffa

Abstract


During paleontological surveys conducted in 2013 and 2014 in Quaternary deposits from the Gruta do Urso cave, Tocantins State, nine isolated teeth and five postcranial elements of Equus neogeus were recovered. Absolute datings indicate that E. neogeus inhabited the surroundings of Gruta do Urso cave during the Last Glacial Maximum. The specimens probably represent very young individuals that died outside the cave, were weathered prior to the final burial, with ontogenetic and taphonomic similarities. Herein, we report the first scavenger interaction of ursids and equids in the South American fossil record.

Keywords


Taphonomy; Paleoecology; Scavenger; Quaternary; Megafauna

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