M 417 (Eocene of the United States)

Where: Frio County, Texas (28.8° N, 99.1° W: paleocoordinates 30.3° N, 90.6° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Stone City Member (Crockett Formation), Bartonian (41.3 - 38.0 Ma)

• Middle Eocene,; middle Claiborne Gr; Stone City Beds; Possibly upper Claiborne Gr; Cook Mt. Fm

• group-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 98837: authorized by Jocelyn Sessa, entered by Ursula Smith on 21.10.2010, edited by Laurie Eccles

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Nuculanida - Nuculanidae
Yoldia (Calorhadia) compsa Gabb 1860 pointed nut clam
 Ostreida - Ostreidae