Boletín de la Sociedad Geológica Mexicana Volumen 71, núm. 3, 2019, p. 727-739 http://dx.doi.org/10.18268/BSGM2019v71n3a6

The first crocodyliforms remains from La Parrita locality, Cerro del Pueblo Formation (Campanian), Coahuila, Mexico

Héctor E. Rivera-Sylva¹, Gerardo Carbot-Chanona², Rafael Vivas-González³, Lizbeth Nava-Rodríguez⁴, Fernando Cabral-Valdéz¹

¹Departamento de Paleontología, Museo del Desierto, Carlos Abedrop Dávila 3745, 25022, Saltillo, Coahuila, Mexico.

²Museo de Paleontología “Eliseo Palacios Aguilera”, Secretaría de Medio Ambiente e Historia Natural. Calzada de los hombres ilustres s/n, 29000, Tuxtla Gutiérrez, Chiapas, Mexico.

³Villa Nápoles 6506, Colonia Mirador de las Mitras, 64348, Monterrey, N. L., Mexico.

⁴Facultad de Ingeniería, Universidad Autónoma de San Luis Potosí, Dr. Manuel Nava 8, Zona Universitaria Poniente, San Luis Potosi, S.L.P., Mexico.

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Abstract

The record of land tetrapods of the Cerro del Pueblo Formation (Late Cretaceous, Campanian), in Coahuila, includes turtles, pterosaurs, dinosaurs, and crocodyliforms. This last group is represented only by goniopholidids, indeterminate eusuchians, and Brachychampsa montana. In this work we report the first crocodyliform remains from La Parrita locality, Cerro del Pueblo Formation, based on one isolated tooth, vertebrae, and osteoderms. The association of crocodyliforms, turtles, dinosaurs, and charophyte oogonia provide evidence for stagnant to fluvial environments on a delta plain with tropical climate for the Cerro del Pueblo Formation during the Late Cretaceous.

Keywords: Crocodyliforms, Globidonta, Late Cretaceous, Coahuila, Mexico.