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Theropod teeth from Cretaceous Adamantina Formation of Brazil



From: Ben Creisler
bcreisler@gmail.com

A new paper:

Sandra Aparecida Simionato Tavares, Fresia Ricardi Branco & Rodrigo
Miloni Santucci (2014)
Theropod teeth from the Adamantina Formation (Bauru Group, Upper
Cretaceous), Monte Alto, São Paulo, Brazil.
Cretaceous Research 50: 59--71
doi:  http://dx.doi.org/10.1016/j.cretres.2014.03.021
http://www.sciencedirect.com/science/article/pii/S0195667114000615

Theropod bone remains from the Bauru Group, Upper Cretaceous,
Southeastern Brazil, are scarce and poorly preserved. Because of that
much of the information about these dinosaurs mainly relies on
isolated teeth. Here we report a set of theropod teeth found in
association with several crocodylomorph teeth and a well-preserved and
semi-articulated sauropod dinosaur from the Adamantina Formation
deposits. The teeth were analyzed under both morphological and
morphometric point of views and the results showed they correspond to
the clades Abelisauridae and Dromaeosauridae. To date, and based on
osteological evidence, abelisaurids are the most common theropod clade
in Bauru Group deposits. Additionally, although deinonychosaur remains
have also been described for this unit, some of the teeth reported
here might represent the first evidence of Dromaeosauridae for the
Bauru Group.