ammonites
Ensenada Decapods (Cretaceous of Mexico)

Where: Baja California, Mexico (31.9° N, 116.6° W: paleocoordinates 36.5° N, 84.2° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Rosario? Formation, Late/Upper Cretaceous (99.6 - 65.5 Ma)

• questionably from Rosario formation.

Environment/lithology: marine; siliciclastic sediments

• Rosario formation exhibits numerous lithologies. Location of these specimens in the section is uncertain.

Size class: macrofossils

Preservation: concretion, original chitin

Collection methods: surface (float), mechanical,

• UNAM IGM

Primary reference: C. E. Schweitzer, R. M. Feldmann, G. Gonzales-Barba and F. J. Vega. 2002. New crabs from the Eocene and Oligocene of Baja California Sur, Mexico and an assessment of the evolutionary and paleobiogeographic implications of Mexican fossil decapods. Journal of Paleontology 76(6):1-43 [C. Schweitzer/C. Schweitzer/C. Schweitzer] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 45697: authorized by Carrie Schweitzer, entered by Carrie Schweitzer on 24.11.2004