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Ichnofossils are a useful tool in determining some aspects of the palaeoecology from past ecosystems, being often used as evidence of interactions between extinct organisms. In this paper we describe tooth traces found in UFRJ-DG 705 R, a fragmentary sauropod epiphysis, from the Presidente Prudente Formation, Bauru Group. We infer that these traces were made by a small to medium-sized crocodyliform, most likely an itasuchid, in a possible act of necrophagy. This new record of tooth traces in the Bauru Group showcases important evidence concerning trophic relations between sauropods and crocodyliforms in this locality during the Late Cretaceous.

historical biology

Dino on the menu: tooth traces in a sauropod epiphysis from the Presidente Prudente Formation (Campanian-Maastrichtian), Bauru Group, Brazil - palaeobiological and palaeoecological implications