M 228 (Eocene of the United States)

Where: Lee County, Texas (30.2° N, 96.9° W: paleocoordinates 31.5° N, 88.3° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

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

• member-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size class: mesofossils

Primary reference: K. V. Palmer and D. C. Brann. 1965. Catalogue of the Paleocene and Eocene mollusca of the southern and eastern United States. Part 1. Pelecypoda, Amphineura, Peteropoda, Scaphopoda and Cephalopoda. Bulletins of American Paleontology 48:1-471 [M. Kosnik/M. Kosnik/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 91814: authorized by Jocelyn Sessa, entered by Laurie Eccles on 20.10.2009, edited by Ursula Smith

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Nuculanida - Nuculanidae
"Yoldia (Orthoyoldia) psammotaea" = Orthoyoldia psammotaea
"Yoldia (Orthoyoldia) psammotaea" = Orthoyoldia psammotaea Dall 1898 pointed nut clam
 Pholadida - Corbulidae
Gastropoda
 Caenogastropoda - Fasciolariidae