AlChBu Rep 3 (Eocene of the United States)

Where: Choctaw County, Alabama (32.1° N, 88.2° W: paleocoordinates 34.1° N, 73.7° W)

• coordinate estimated from map

• small collection-level geographic resolution

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

• Rep 1 is 8.8m laterally from Rep 2 and about 40cm above it

•Rep 3 is 3.8m laterally from Rep 1

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

• unlithified glaucontic calcareous clayey sand

Size class: mesofossils

Collection methods: bulk, sieve

• Gastropod shells were only counted if they contained the apex of the shell; bivalve shells were only counted if they contained the umbo

Primary reference: J. A. Sessa, T. J. Bralower, M. E. Patzkowsky, J. C. Handley, and L. C. Ivany. 2012. Environmental and biological controls on the diversity and ecology of Late Cretaceous through early Paleogene marine ecosystems in the US Gulf Coastal Plain. Paleobiology 38(2):218-239 [M. Patzkowsky/J. Sessa/J. Sessa]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 90040: authorized by Jocelyn Sessa, entered by Laurie Eccles on 01.07.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Bivalvia
 Nuculida - Nuculidae
"Nucula ovula" = Nucula (Nucula) ovula
"Nucula ovula" = Nucula (Nucula) ovula Lea 1833 nut clam
 Nuculanida - Nuculanidae
Calorhadia aldrichiana pointed nut clam
"Calorhadia pharcida" = Calorhadia (Calorhadia) pharcida Dall 1898 pointed nut clam
Saccella robusta pointed nut clam
 Ostreida - Ostreidae
 Pectinida - Pectinoidae
Chlamys choctavensis Aldrich 1895 scallop
 Lucinida - Lucinidae
Linga pomilia Conrad 1833 clam
Linga pomilia smithi
 Cardiida - Veneridae
 Cardiida - Tellinidae
 Pholadida - Corbulidae
Vokesula aldrichi Meyer 1885 clam
 Carditida - Carditidae
"Venericardia horatiana" = Venericardia (Venericor) horatiana Gardner 1927 clam
Venericardia bashiplata Gardner and Bowles 1939 clam
Scaphopoda
 Gadilida - Gadilidae
Cadulus sp. Philippi 1844 tusk shell
 Dentaliida - Dentaliidae
Dentalium microstria Heilprin 1880 tusk shell
Gastropoda
 Cerithioidea - Turritellidae
Turritella gilberti turret shell
 Neogastropoda - Nassariidae
? Nassarius sp. Duméril 1806 snail
 Sorbeoconcha - Naticidae
Polinices sp. Monfort 1810 moon snail