M 70 (Eocene of the United States)

Where: Bienville County, Louisiana (32.4° N, 93.0° W: paleocoordinates 33.4° N, 84.1° 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 92273: authorized by Jocelyn Sessa, entered by Laurie Eccles on 04.11.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
 Sorbeoconcha - Eocypraeidae
Sulcocypraea vaughani Johnson 1899 snail
 Sorbeoconcha - Strombidae
"Ectinochilus texanum" = Rimella
"Ectinochilus texanum" = Rimella true conch
 Neogastropoda - Volutidae
Bullata semen Lea 1833 volute
 Neogastropoda - Turridae
? Pleurofusia huppertzi turrid
? Pleurofusia huppertzi hammettensis
 Sorbeoconcha - Ranellidae
"Distorsio (Personella) septemdentata" = Sassia (Personella) septemdentata
"Distorsio (Personella) septemdentata" = Sassia (Personella) septemdentata Gabb 1860 triton shell
 Cerithioidea - Turritellidae
"Turritella pleboides" = Kapalmerella pleboides
"Turritella pleboides" = Kapalmerella pleboides Vaughan 1895 turret shell
Bivalvia
 Nuculida - Nuculidae
Nucula (Nucula) magnifica Conrad 1833 nut clam
Nucula (Nucula) magnifica <"var." A>
 Nuculanida - Yoldiidae