USGS 13142, Loma Guajardo (Eocene of Mexico)

Where: Nuevo Leon, Mexico (25.8° N, 100.1° W: paleocoordinates 27.4° N, 91.9° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Cook Mountain Formation, Bartonian (41.3 - 38.0 Ma)

• LITHOSTRATIGRAPHY: From the "upper part of the Cook Mountain" of northern Mexico. AGE: Placed by enterer in Bartonian on the basis of age for Cook Mountain in GCP. STRATIGRAPHIC POSITION: From "upper part" of Cook Mountain equivalent strata.

• bed-level stratigraphic resolution

Environment/lithology: coastal; poorly lithified lithology not reported

• PALEOENVIRONMENT: No paleoenvironmental data reported.
• LITHOLOGY: Unknown. LITHIFICATION: Poorly-lithified, on the basis of figured specimens.

Size class: macrofossils

Reposited in the USNM

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

• COLLECTOR: Not stated, but possibly Gardner. REPOSITORY: Collections reposited in USGS and USNM collections.

Primary reference: J. Gardner and E. Bowles. 1939. The Venericardia planicosta group in the Gulf Province. United States Geological Survey Professional Paper 189(F):143-215 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 111220: authorized by Austin Hendy, entered by Austin Hendy on 21.06.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Limited to Venericardiinae. NOMENCLATURE: Authoritative publication, with somewhat antiquated nomenclature, and species-resolution identifications.
Bivalvia
 Carditida - Carditidae
Venericardia (Venericor) cacamai n. sp. Gardner and Bowles 1939 clam