P-22 (Brazos River K-T boundary, TX) (Paleocene of the United States)

Where: Falls County, Texas (31.3° N, 97.0° W: paleocoordinates 36.1° N, 77.4° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Pisgah Member (Kincaid Formation), Danian (66.0 - 61.6 Ma)

• in foram zone P1c

Environment/lithology: marine; unlithified, argillaceous siltstone

• unconsolidated clay or clayey silt

Size class: mesofossils

Collection methods: bulk, mechanical,

Primary reference: T. A. Hansen, B. R. Farrell, and B. Upshaw, III. 1993. The first 2 million years after the Cretaceous-Tertiary boundary in east Texas: Rate and paleoecology of the molluscan recovery. Paleobiology 19(2):251-265 [A. Miller/K. Layou/M. Uhen]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 5591: authorized by Arnold Miller, entered by Karen Layou on 20.10.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
 Cerithioidea - Turritellidae
Turritellidae indet. Lovén 1847 turret shell
 Cerithioidea - Cerithiidae
Cerithiidae indet. Fleming 1822 cerith snail
C. sp. b
 Neogastropoda - Ptychatractidae
Exilia cf. pergracilis Conrad 1860 snail
 Neogastropoda - Fasciolariidae
Fasciolariidae indet. Gray 1853 snail
F. sp. c
 Neogastropoda - Olividae
Olividae indet. Latreille 1825 olive snail
 Neogastropoda - Volutidae
Volutidae indet. Rafinesque 1815 volute
 Sorbeoconcha - Naticidae
Naticidae indet. Guilding 1834 moon snail
 Trochoidea - Skeneidae
Solariorbis ? sp. Conrad 1865 snail
S.? sp. b
 Opisthobranchia - Retusidae
Bivalvia
 Solemyida - Solemyidae
Solemya bilix Awning Clam
 Nuculida - Nuculidae
"Nucula mediavia" = Nucula (Nucula) mediavia
"Nucula mediavia" = Nucula (Nucula) mediavia Harris 1896 nut clam
 Nuculanida - Nuculanidae
Nuculanidae indet. Adams and Adams 1858 pointed nut clam
Saccella sp. Woodring 1925 pointed nut clam
Jupiteria smirna pointed nut clam
 Arcida - Cucullaeidae
Cucullaea sp. Lamarck 1801 clam
 Pectinida - Propeamussiidae
Amusium alabamense Aldrich 1886 mud scallop
 Ostreida - Ostreidae
Ostreidae indet. Rafinesque 1815 oyster
 Carditida - Carditidae
Carditidae indet. Fleming 1820 clam
 Carditida - Crassatellidae
Crassatella sp. Lamarck 1799 clam
 Lucinida - Lucinidae
Lucinidae indet. Fleming 1828 clam
L. sp. a
 Cardiida - Tellinidae
Tellinidae indet. Blainville 1814 tellin clam
Scaphopoda
  -
Scaphopoda indet. Bronn 1862 tusk shell
Anthozoa
 Hexacorallia -
Scleractinia indet. Bourne 1900 stony coral
solitary coral