Ejido Presa San Antonio (Cretaceous of Mexico)

Also known as La Presa

Where: Coahuila, Mexico (25.4° N, 101.8° W: paleocoordinates 31.6° N, 76.4° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Cerro del Pueblo Formation (Difunta Group), Late/Upper Campanian (83.5 - 70.6 Ma)

• middle part of formation

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Preservation: soft parts

Collected by UNAM in 1988-1989

Collection methods: quarrying, surface (float), surface (in situ), mechanical,

Primary reference: R. Hernández-Rivera. 1997. Mexican dinosaurs. In P. J. Currie & K. Padian (ed.), Encyclopedia of Dinosaurs 433-437 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 24258: authorized by John Alroy, entered by John Alroy on 03.08.2002, edited by Monica Arakaki, Jason Cassara and Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

 Testudines - Trionychidae
Trionychidae indet.5 Gray 1825 softshell turtle
 Testudines - Kinosternoidea
cf. Hoplochelys sp.5 Hay 1908 mud turtle
 Theropoda -
 Neornithischia - Ceratopsidae
Ceratopsidae indet.1 Marsh 1888 ceratopsid
CPC 278
 Neornithischia - Hadrosauridae
Hadrosauridae indet.3 Cope 1869 hadrosaurid
tooth, incomplete maxilla (Coah 14)
Corythosaurini indet.3 Glut 1997 lambeosaurine
Coah 14-1/3-6
Latirhinus uitstlani n. gen. n. sp.2 Prieto-Márquez and Serrano Brañas 2012 hadrosaurid
field no. SPA-88-9