Sohl and Koch OFR # 949 (Cretaceous of the United States)

Also known as La Rosita; USGS # 8223

Where: Maverick County, Texas (28.6° N, 100.4° W: paleocoordinates 34.8° N, 79.3° W)

• small collection-level geographic resolution

When: middle Member (Escondido Formation), Maastrichtian (72.1 - 66.0 Ma)

• Haustator bilira assemblage zone.

• member-level stratigraphic resolution

Environment/lithology: estuary or bay; glauconitic, gray, calcareous siltstone

Size class: mesofossils

Preservation: original calcite, replaced with calcite

Reposited in the USGS

• Stephenson collection

Primary reference: N. F. Sohl and C. F. Koch. 1984. Upper Cretaceous (Maestrichtian) larger invertebrate Fossils from the Haustator bilira Assemblage Zone in the west gulf Coastal Plain. USGS Open File Report 84-687:1-282 [M. Kosnik/M. Kosnik]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 4618: authorized by Matt Kosnik, entered by Matt Kosnik on 14.08.1999, edited by Austin Hendy

Creative Commons license: CC BY (attribution)

Taxonomic list

Lithophagidae indet.
Lithophagid borings
 Cirripedia -
Cirripedia indet. Rafinesque 1816 barnacle
Barnacles plates
 Sorbeoconcha - Cerithiidae
Cerithium sp. Bruguière 1789 cerith snail
Cerithium sp.
 Sorbeoconcha - Triforidae
Cerithiella semirugatum Wade 1926 snail
Cerithiella semirugatum (Wade)
 Pectinida - Anomiidae
Anomia (Anomia) ornata Gabb 1876 jingle
Anomia (Anomia) ornata Gabb
 Ostreida - Ostreidae
Crassostrea cortex oyster
Crassostrea cortex (Conrad)
Ostrea sp. Linnaeus 1758 oyster
Ostrea sp.
Bryozoa indet. Ehrenberg 1831
Bryozoa (encrusting)
 Clavulina - Clionaidae
Cliona sp. demosponge
Clione sp.