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[dinosaur] Crocodylomorpha from Late Jurassic of Brazil




Ben Creisler
bcreisler@gmail.com

A new paper:

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Anny Rafaela DE AraÃjo Carvalho, Gustavo Ribeiro Oliveira & Alcina Magnolia Franca Barreto (2021)
New Crocodylomorpha remains from the Late Jurassic AlianÃa Formation (Dom JoÃo stage), Jatobà Basin.
Journal of South American Earth Sciences 103256 (advance online publication)
doi: https://doi.org/10.1016/j.jsames.2021.103256
https://www.sciencedirect.com/science/article/abs/pii/S0895981121001024


Highlights

New Crocodylomorpha specimens are described for the Jurassic in Brazil.
New contributions to the knowledge about the Jatobà Basin biota including Goniopholididae.
First described Crocodylomorpha from the Jatobà Basin, Brazil.

Abstract

Up to date, at least 50 species of Crocodylomorpha are known in Brazil. Those species are distributed in a temporal range from the Triassic to the present day. However, Crocodylomorpha records from the Brazilian Jurassic are quite scarce, and they have been often considered as lacking enough information for a proper systematic identification. In this study, we describe new Crocodylomorpha specimens, collected in Ibimirim city, Pernambuco state, Northeast of Brazil, where outcrops of the AlianÃa Formation (Upper Jurassic), Jatobà Basin, have been recorded. The specimens are represented by teeth, frontal plate, vertebrae, and osteoderms. Despite fragmented, these Crocodylomorpha remains allowed us, based mainly on morphological evidence in the teeth, to visualize intermediate characteristics between the Goniopholididae and Teleosauridae. The present work reveals the high, and still little explored, paleontological potential of the AlianÃa Formation in the understanding of the Brazilian Jurassic.

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