ACh-17 (N Creek Clay) (Eocene of the United States)

Where: Choctaw County, Alabama (31.8° N, 88.5° W: paleocoordinates 32.3° N, 80.6° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: North Twistwood Creek Clay Member (Yazoo Clay Formation), Priabonian (38.0 - 33.9 Ma)

• supposedly "Bartonian"; stage assignment based on Baum et al. 1994; Station ACh-17

• group of beds-level stratigraphic resolution

Environment/lithology: marine; unlithified, gray, sandy claystone

• lithology described as a sandy clay

Size class: mesofossils

Primary reference: L. D. Toulmin. 1977. Stratigraphic Distribution of Paleocene and Eocene Fossils in the Eastern Gulf Coast Region. Geological Survey of Alabama, Monograph 13 1:1-602 [M. Patzkowsky/K. Layou/M. Uhen]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 3538: authorized by Mark Patzkowsky, entered by Karen Layou on 04.08.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

 Scalpelliformes - Scalpellidae
Aporolepas howei Cheetham 1963 barnacle
 Sessilia - Balanidae
Balanus sp. Da Costa 1778 barnacle
 Pectinida - Pectinoidae
 Ostreida - Ostreidae
Ostrea sp. Linnaeus 1758 oyster
originally entered as "Ostrea spp."
 Carditida - Carditidae
Venericardia sp. Lamarck 1801 clam
originally entered as "Venericardia spp."
 Pholadida - Corbulidae
 Cardiida - Cardiidae
Laevicardium sp. Swainson 1840 cockle
 Lucinida - Lucinidae
Saxolucina gaufia Harris 1946 clam
 Nuculida - Nuculidae
"Nucula spheniopsis" = Nucula (Nucula) sphenopsis
"Nucula spheniopsis" = Nucula (Nucula) sphenopsis Conrad 1865 nut clam
Vertebrata indet. Lamarck 1801
shark teeth
Vertebrata indet. Lamarck 1801
ray dental plate
 Scleractinia - Dendrophylliidae
Endopachys sp. Lonsdale 1845 stony coral
Endopachys maclurii Lea 1833 stony coral