PBDB Collection

Ejido El Pelillal (Cretaceous of Mexico)

Also known as Ramos Arizpe

Where: Coahuila, Mexico (26.1° N, 101.1° W: paleocoordinates 32.2° N, 75.5° W)

• coordinate stated in text

• outcrop-level geographic resolution

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

• member-level stratigraphic resolution

Environment/lithology: fluvial-deltaic; lithology not reported

• no information on lithology is given at all (!)

•suggested to be a "tidal riverine system with a coastline closely situated" or else a "freshwater lacustrine environment close to a small bay"

Size class: macrofossils

Primary reference: R. A. Rodriguez-de la Rosa and S. R. S. Cevallos-Ferriz. 1998. Vertebrates of the El Pelillal locality (Campanian, Cerro del Pueblo Formation), southeastern Coahuila, Mexico. Journal of Vertebrate Paleontology 18(4):751-764 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 24257: authorized by John Alroy, entered by John Alroy on 03.08.2002, edited by Patricia Holroyd and Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

Actinopteri
Lepisosteiformes - Lepisosteidae	Lepisosteidae indet. Lepisosteidae indet. Cuvier 1825 gar
Amiiformes - Amiidae	cf. Melvius sp. cf. Melvius sp. Bryant 1988 bowfin
Reptilia
Ornithischia - Hadrosauridae	Hadrosaurinae indet. Hadrosaurinae indet. Lambe 1918 hadrosaurine IGM 7709, tooth
Ornithischia - Nodosauridae	Nodosauridae indet.³ Nodosauridae indet.³ Marsh 1890 ankylosaur caudal vertebraCPC 275,
Theropoda -	Theropoda indet.⁴ Theropoda indet.⁴ theropod IGM 7711–7715
Theropoda - Dromaeosauridae	Dromaeosauridae indet.⁵ Dromaeosauridae indet.⁵ Colbert and Russell 1969 maniraptoran
Theropoda - Troodontidae	Troodontidae indet. Troodontidae indet. Gilmore 1924 maniraptoran IGM 7710, pedal II phalanx
Pterosauria -	Pterodactyloidea indet. Pterodactyloidea indet. Plieninger 1901 pterosaur IGM 7708, proximal ?left tibia
Loricata - Goniopholididae	Goniopholididae indet. Goniopholididae indet. Cope 1875 crocodilian IGM 7700, tooth; IGM 7701, sacral; IGM 7702, osteoderm
Loricata -	Eusuchia indet. Eusuchia indet. Huxley 1875 crocodilian IGM 7703 to 7707
Testudinata -	Compsemys victa Compsemys victa Leidy 1856 turtle
Testudines - Trionychidae	Trionychidae indet. Trionychidae indet. Gray 1825 softshell turtle
Testudines - Adocidae	Adocus sp.² Adocus sp.² Cope 1868 turtle reidentification of one peripheral referred to Trionychidae in ref. 694
Testudines - Kinosternoidea	Kinosternoidea indet., Yelmochelys rosarioae¹ Kinosternoidea indet. mud turtle Yelmochelys rosarioae¹ Brinkman et al. 2016 mud turtle
Testudines - Panchelydridae	cf. Protochelydra sp. cf. Protochelydra sp. Erickson 1973 turtle

¹Brinkman et al. 2016; ²Brinkman and Rodríguez de la Rosa 2006; ³Ramírez-Velasco and Hernández-Rivera 2015; ⁴Rodriguez-de la Rosa 1995; ⁵Rodriguez-de la Rosa 1996