Rojas 2 (IGM Loc. 312) (Cretaceous of Mexico)

Also known as Rojas II, General Cepeda

Where: Coahuila, Mexico (25.5° N, 101.4° W: paleocoordinates 31.6° N, 76.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

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

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Preservation: mold/impression, soft parts

Collected by J. Rojas in 1977, 1980

Primary reference: A. A. Ramírez-Velasco, R. Hernández-Rivera, and R. Servin-Pichardo. 2014. The hadrosaurian record from Mexico. In D. A. Eberth & D. C. Evans (ed.), Hadrosaurs 340-360 [M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 171003: authorized by Matthew Carrano, entered by Matthew Carrano on 30.06.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Ornithischia - Ceratopsidae
Ceratopsidae indet. Marsh 1888 ceratopsid
metacarpal (ICM)
 Ornithischia - Hadrosauridae
Hadrosauridae indet. Cope 1869 hadrosaurid
vertebrae, ulnae, jaw fragments, pedal elements, humerus, skin impressions (IGLUNAM)
 Theropoda -
Theropoda indet. Marsh 1881 theropod
long bone fragments (IGM)