PBDB Collection

Sohl and Koch OFR # 825 (Cretaceous of the United States)

Also known as Seco Cr; USGS # 7702

Where: Medina County, Texas (29.2° N, 99.3° W: paleocoordinates 35.2° N, 78.0° W)

• small collection-level geographic resolution

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

• Haustator bilira assemblage zone.

• formation-level stratigraphic resolution

Environment/lithology: estuary or bay; lithified, gray sandstone

Size class: mesofossils

Preservation: original 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 4548: authorized by Matt Kosnik, entered by Matt Kosnik on 14.08.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

unclassified
-	Vertebrata indet., Vertebrata indet. Vertebrata indet. Lamarck 1801 Fish parts Vertebrata indet. Lamarck 1801 Shark parts
Cephalopoda
Ammonitida - Sphenodiscidae	Sphenodiscus pleurisepta Sphenodiscus pleurisepta Conrad 1857 ammonite Sphenodiscus pleurisepta (Conrad)
Gastropoda
Sorbeoconcha - Naticidae	Gyrodes americanus Gyrodes americanus moon snail Gyrodes americanus Wade
Neogastropoda -	Neogastropoda indet. Neogastropoda indet. Thiele 1929 snail Neogastropods indeterminate
Neogastropoda - Buccinidae	Aliofusus sp. n. sp. Aliofusus sp. n. sp. Stephenson 1941 true whelk Aliofusus n. sp. (crowded costae) - originally entered as "Aliofusus n. sp."
Bivalvia
Nuculanida - Malletiidae	"Perissonata sp." = Perrisonota, Malletia longfrons "Perissonata sp." = Perrisonota Conrad 1869 clam Perrisonota sp. Malletia longfrons clam Malletia longfrons (Conrad)
Pectinida - Anomiidae	Anomia (Anomia) ornata Anomia (Anomia) ornata Gabb 1876 jingle Anomia (Anomia) ornata Gabb
Ostreida - Pteriidae	Pteria sp. Pteria sp. Scopoli 1777 pearl oyster Pteria sp.
Ostreida - Ostreidae	Ostrea sp. Ostrea sp. Linnaeus 1758 oyster Ostrea sp.
Arcida - Arcidae	Striarca cuneata Striarca cuneata clam Striarca cuneata Gabb
Cardiida - Cardiidae	Trachycardium sp. Trachycardium sp. Mörch 1853 cockle Trachycardium sp.
Cardiida - Mactridae	Cymbophora berryi, Cymbophora inflata Cymbophora berryi clam Cymbophora berryi (Gardner) Cymbophora inflata clam Cymbophora inflata Stephenson
Deuteropoda
-	Malacostraca indet. Malacostraca indet. Latreille 1802 Crab parts