Where: Durango, Mexico (24.2° N, 102.8° W: paleocoordinates 20.9° N, 55.2° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Cabonera Formation, Berriasian (145.0 - 139.8 Ma)

• bed-level stratigraphic resolution

Environment/lithology: gray sandstone and shale

Primary reference: R. W. Imlay. 1940. Neocomian Faunas of Northern Mexico. Geological Society America Bulletin 51(1):117-190 [M. Patzkowsky/K. Layou/A. Clement]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 2151: authorized by Mark Patzkowsky, entered by Karen Layou on 23.06.1999

Creative Commons license: CC BY (attribution)