M 337 (Paleocene to of the United States)

Also known as LGS 37

Where: Sabine County, Louisiana (31.6° N, 93.4° W: paleocoordinates 34.8° N, 77.7° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Marthaville Formation (Wilcox Group), Selandian to Selandian (61.6 - 47.8 Ma)

• formation-level stratigraphic resolution

Environment/lithology: marine; unlithified, gray, blue, silty claystone

• Found in highly oxidized bluish gray clays and silts overlying massive brick-red sands (Barry & LeBlanc 1942).

Size classes: macrofossils, mesofossils

Preservation: mold/impression

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 98909: authorized by Jocelyn Sessa, entered by Laurie Eccles on 22.10.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
 Cerithioidea - Turritellidae
Bivalvia
 Carditida - Carditidae
Venericardia (Venericor) densata Conrad 1845 clam
Venericardia (Venericor) densata pendletonensis
 Ostreida - Ostreidae
"Ostrea thirsae" = Odontogryphaea thirsae
"Ostrea thirsae" = Odontogryphaea thirsae Gabb 1862 oyster