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

Creative Commons license: CC BY (attribution)

Taxonomic list

Actinopteri
 Amiiformes - Amiidae
cf. Melvius sp. Bryant 1987 bowfin
 Lepisosteiformes - Lepisosteidae
Lepisosteidae indet. Cuvier 1825 gar
Reptilia
 Testudines - Trionychidae
Trionychidae indet. Gray 1825 softshell turtle
 Testudines -
Compsemys victa Leidy 1856 turtle
 Testudines - Adocidae
Adocus sp.2 Cope 1868 turtle
reidentification of one peripheral referred to Trionychidae in ref. 694
 Testudines - Kinosternoidea
Yelmochelys rosarioae1 Brinkman et al. 2016 mud turtle
 Testudines - Panchelydridae
cf. Protochelydra sp. Erickson 1973 turtle
 Theropoda -
 Avetheropoda - Dromaeosauridae
Dromaeosauridae indet.4 Colbert and Russell 1969 coelurosaur
 Avetheropoda - Troodontidae
Troodontidae indet. Gilmore 1924 coelurosaur
 Neornithischia - Hadrosauridae
Hadrosaurinae indet. Lambe 1918 hadrosaurine
tooth
 Pterosauria -
Pterodactyloidea indet. Plieninger 1901 pterosaur
IGM 7708, proximal ?left tibia
 Loricata -
Eusuchia indet. Huxley 1875 crocodilian
 Loricata - Goniopholididae
Goniopholididae indet. Cope 1875 crocodilian