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On a new peirosaurid crocodyliform from the Upper Cretaceous, Bauru Group, southeastern Brazil

2011; Brazilian Academy of Sciences; Volume: 83; Issue: 1 Linguagem: Inglês

10.1590/s0001-37652011000100020

1678-2690

Diógenes de Almeida Campos, Gustavo R. Oliveira, Rodrigo G. Figueiredo, Douglas Riff, Sergio Alex Kugland de Azevedo, Luciana Barbosa de Carvalho, Alexander W. A. Kellner,

Evolution and Paleontology Studies

A new crocodyliform from the Upper Cretaceous (Campanian-Maastrichtian) Presidente Prudente Formation of the Bauru Group is described based on two almost complete skulls and mandibles. The material comes from the "Tartaruguito" site, situated at an old railroad between the cities of Pirapozinho and Presidente Prudente, state of São Paulo, Brazil. The new species, Pepesuchus deiseae gen. et sp. nov., is classified in the clade Peirosauridae on the basis of three synapomorphies: the presence of five premaxillary teeth, the anterior two premaxillary alveoli nearly confluent, and the oval cross-section of the jugal along the lower temporal bar. The new taxon increases the outstanding crocodyliform diversity of the Bauru Group, particularly of the Peirosauridae, which might turn out to be one of the most representative clades of gondwanan mesoeucrocodylians.