Where: Coahuila de Zaragoza, Mexico (26.4° N, 103.3° W)

• Paleocoordinates: 33.2° N, 56.6° W (Wright 2013)

• outcrop-level geographic resolution

When: Aurora Limestone Formation, Albian (113.0 - 100.5 Ma)

• STRATIGRAPHIC RELATIONS: From the Aurora Limestone, for which lithostratigraphic relationships are not discussed AGE: Albian, on the basis of biostratigraphic correlation to better dated Texan lithostratigraphic units. STRATIGRAPHIC POSITION: From Gryphaea mucronata zone; unknown position within the formation.

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified limestone

Size class: macrofossils

Preservation: mold/impression

Collected by Kellum in 1953; reposited in the UMMP

Collection methods: surface (float), surface (in situ),

• COLLECTOR: Kellum, 1953. REPOSITORY: UMMP.

Primary reference: L. B. Kellum. 1956. Cretaceous invertebrates of the Aurora Limestone. Papers of the Michigan Academy of Science, Arts, and Letters 41:205-231 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 88635: authorized by Austin Hendy, entered by Austin Hendy on 16.04.2009

Creative Commons license: CC0 (CC0)