Boletín de la Sociedad Geológica Mexicana

Volumen 70, núm. 3, 2018, p. 779 ‒ 784
Short note


 First occurrence of Parksosauridae in Mexico, from the Cerro del Pueblo Formation (Late Cretaceous; late Campanian) at Las Águilas, Coahuila

Héctor E. Rivera-Sylva1, Eberhard Frey2, Wolfgang Stinnesbeck3, Natalia Amezcua4, Diana Flores Huerta4


1Departamento de Paleontología, Museo del Desierto, Carlos Abedrop Dávila 3745, 25022, Saltillo, Coah., México.
2Staatliches Museum für Naturkunde Karl­sruhe, Geowissenschaftliche Abteilung, Erb­prinzenstraße 13, D76133 Karlsruhe, Germa­ny.
3Institut für Geowissenschaften, Universität Heidelberg, Im Neunheimer Feld 234-236, 69120 Heidelberg, Germany.
4Servicio Geológico Mexicano, Blvd. Felipe Ángeles km 9.5-4, Pachuca, Hgo., México.

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The Las Águilas locality near Porvenir de Jalpa, Coahuila, Mexico, is extremely rich in fossil remains comprising both bones and trackways of several late Campanian dinosaur taxa. Here we present a tooth with an asymmetrically bulged crown and an isolated shallow amphicoelous vertebral centrum. Both are assigned by us to Parksosauridae. The material represents the first occurrence of this enigmatic family in Mexico.

Keywords: Cerro del Pueblo Formation, Parksosauridae, Campanian, Coahuila, Mexico.