M 720 (Paleocene of the United States)

Also known as LGS 30

Where: Sabine County, Louisiana (31.6° N, 93.5° W: paleocoordinates 35.1° N, 76.4° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Marthaville Formation (Wilcox Group), Thanetian (59.2 - 56.0 Ma)

• formation-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

• Fossils collected from calcareous and ferruginous concretionary layer (Barry & LeBlanc 1942).

Size classes: macrofossils, 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 98920: authorized by Jocelyn Sessa, entered by Laurie Eccles on 22.10.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Ostreida - Ostreidae
"Ostrea thirsae" = Odontogryphaea thirsae Gabb 1862 oyster
 Cardiida - Veneridae
Pitaria (Pitaria) nuttelliopsis venus clam
including Pitar (Pitar) nuttalliopsis greggi
 Carditida - Carditidae
Venericardia (Venericor) densata Conrad 1845 clam
Venericardia (Venericor) densata pendletonensis
Anthozoa
 Scleractinia - Astrocoeniidae
Madracis gregorioi Vaughan 1900 stony coral