Bed P, Stone City Bluff (type locality Stone City beds) (Eocene to of the United States)

Where: Brazos County, Texas (30.6° N, 96.5° W: paleocoordinates 32.4° N, 86.5° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Stone City Formation, Lutetian to Lutetian (47.8 - 38.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified, lenticular, glauconitic, gypsiferous, shelly/skeletal, brown, silty sandstone and lithified, concretionary, glauconitic, gray, green, argillaceous, calcareous siltstone

• crumbly moderate yellowish-brown, weathering to light brown, lenticular, fossiliferous, gypsiferous, silty, very fine grained, glauconite arenite containing a few flat concretions of hard, dense, greenish gray, weathering to medium gray, fossiliferous, argillaceous, calcareous, glauconitic, siltstone containing marcasite on vertical shrinkage cracks

Size class: macrofossils

Preservation: concretion

Primary reference: H. B. Stenzel, E. K. Krause, and J. T. Twining. 1957. Pelecypoda from the type locality of the Stone City beds (Middle Eocene) of Texas. University of Texas Publication (5704) [M. Kosnik/M. Kosnik/M. Kosnik]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 41433: authorized by Arnold Miller, entered by Karen Layou on 14.07.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Arcida - Arcidae
Pachecoa (Pachecoa) sabinica Harris 1919 clam
abundant
 Pectinida - Anomiidae
Anomia ephippioides Gabb 1860 jingle
rare
 Carditida - Carditidae
"Venericardia (Venericor) planicosta" = Venericor planicosta
"Venericardia (Venericor) planicosta" = Venericor planicosta Lamarck 1801 clam
frequent; V. (Venericor) planicosta densata
 Pholadida - Corbulidae
Vokesula smithvillensis Harris 1919 clam
rare; V, smithvillensis petropolitana
 Cardiida - Tellinidae
Tellina (Eurytellina) mooreana Gabb 1860 tellin clam
rare
 Protobranchia - Nuculanidae
Orthoyoldia psammotaea Dall 1898 pointed nut clam
rare
Calorhadia (Calorhadia) compsa pointed nut clam
rare