M 202 (Eocene of the United States)

Where: Brazos County, Texas (30.7° N, 96.4° W: paleocoordinates 31.9° N, 87.7° 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 91797: authorized by Jocelyn Sessa, entered by Laurie Eccles on 20.10.2009, edited by Ursula Smith

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
 Neogastropoda - Cancellariidae
Trigonostoma panones snail
Trigonostoma panones smithvillense
 Neogastropoda - Turridae
 Neogastropoda - Cochlespiridae
"Eodrillia texana" = Tropisurcula (Eodrillia)
"Eodrillia texana" = Tropisurcula (Eodrillia) snail
 Opisthobranchia - Haminoeidae
Bivalvia
 Nuculanida - Nuculanidae
Yoldia (Calorhadia) compsa Gabb 1860 pointed nut clam
 Pholadida - Corbulidae
 Arcida - Arcidae
Pachecoa (Pachecoa) pulchra clam
Pachecoa (Pachecoa) pulchra variations