M 9 (Eocene of the United States)

Where: Choctaw County, Alabama (31.9° N, 87.8° W: paleocoordinates 33.9° N, 73.2° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Bashi Member (Hatchetigbee Bluff Formation), Ypresian (56.0 - 47.8 Ma)

• member-level stratigraphic resolution

Environment/lithology: shallow subtidal; unlithified, glauconitic, argillaceous, calcareous sandstone

• Environment from PBDB col 90038
• unlithified glaucontic calcareous clayey sand-Lithology from PBDB col 90038

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 92269: authorized by Jocelyn Sessa, entered by Laurie Eccles on 04.11.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
 Neogastropoda - Cancellariidae
 Neogastropoda - Mitridae
"Volvariella aldrichi" = Volvaria (Volvariella)
"Volvariella aldrichi" = Volvaria (Volvariella) mitre shell
 Neogastropoda - Borsoniidae
 Neogastropoda - Melongenidae
Levifusus "sp. J" Conrad 1865 snail
? Levifusus pagodiformis Heilprin 1881 snail
 Sorbeoconcha - Naticidae
Sigatica clarkeana Aldrich 1887 moon snail
 Trochoidea - Skeneidae
 Heterostropha - Architectonicidae
 Heterostropha - Acteonidae
 Heterostropha - Mathildidae
Gegania sp. Jeffreys 1884 snail
 Thecosomata - Limacinidae
 Opisthobranchia - Cylichnidae
Abderospira sabina Palmer 1937 snail
Scaphopoda
 Dentaliida - Dentaliidae
Dentalium microstria Heilprin 1880 tusk shell
Bivalvia
 Pectinida - Pectinoidae
Chlamys choctavensis Aldrich 1895 scallop
 Mytilida - Mytilidae
Brachidontes alabamensis Aldrich 1895 mussel
 Cardiida - Kelliidae
 Cardiida - Galeommatidae
Scintilla clarkeana Aldrich 1897 clam
 Cardiida - Sportellidae
Sportella oblonga Conrad 1848 clam
 Lucinida - Lucinidae
 Nuculanida - Nuculanidae
Nuculana marieana pointed nut clam
 Nuculida - Nuculidae
Nucula "sp. C" Lamarck 1799 nut clam