Where: Coahuila, Mexico (25.9° N, 101.1° W: paleocoordinates 32.2° N, 81.3° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Rancho Nuevo Formation (Difunta Group), Late/Upper Maastrichtian (70.6 - 66.0 Ma)

• basal unit of formation

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; calcareous sandstone

Size class: mesofossils

Collected by C. R. D. de Jesús in 1993

Collection methods: surface (float),

Primary reference: J. I. Kirkland, R. Hernández Rivera, M. C. Aguillón Martínez, C. R. Delgado Jesús, R. Gómez Nuñez and I. Vallejo. 2000. The Late Cretaceous Difunta Group of the Parras Basin, Coahuila, Mexico, and its vertebrate fauna. Society of Vertebrate Paleontology 60nd Annual Meeting, Guide Book of the Field Trips. Avances en Investigación, Special Publication 3:133-172 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 79606: authorized by Matthew Carrano, entered by Matthew Carrano on 14.03.2008

Creative Commons license: CC BY (attribution)