Also known as USGS 14033

Where: Tamaulipas, Mexico (24.9° N, 98.2° W: paleocoordinates 25.6° N, 93.1° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Limestone Member, Late/Upper Oligocene (28.4 - 23.0 Ma)

• The upper Oligocene in northeastern Mexico is more than 500 ft thick. Two horizons distinct in lithology and in fossil content are included: a lower limestone with a fauna allied to to that of the Chickasawhay and Suwanee Limestones, and an upper sandstone with faunas closely related to the Vicksburg Group.

• bed-level stratigraphic resolution

Environment/lithology: shallow subtidal; gray, white limestone

Size class: macrofossils

Reposited in the USNM

Collection methods: quarrying,

• Collections reposited in USGS and USNM collections.

Primary reference: J. Gardner. 1945. Mollusca of the Tertiary formations of Northeastern Mexico. Geological Society of American Memoir 11 [M. Kosnik/M. Kosnik/M. Kosnik]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 43086: authorized by Austin Hendy, entered by Austin Hendy on 10.08.2004

Creative Commons license: CC BY (attribution)