P-20 (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, composite section from B-2 and DMC-2

Environment/lithology: marine; unlithified, argillaceous siltstone

• unconsolidated clay and 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: biostratigraphic analysis

PaleoDB collection 5589: authorized by Arnold Miller, entered by Karen Layou on 20.10.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Scaphopoda
  -
Scaphopoda indet.
Scaphopoda indet. Bronn 1862 tusk shell
 Dentaliida - Dentaliidae
Dentalium sp.
Dentalium sp. Linnaeus 1758 tusk shell
Gastropoda
 Heterostropha - Acteonidae
Tornatellaea sp.
Tornatellaea sp. Conrad 1860 snail
 Cerithioidea - Cerithiidae
Cerithiidae indet., Bittium estellense
Cerithiidae indet. Fleming 1822 cerith snail
C. sp. b
Bittium estellense cerith snail
 Cerithioidea - Turritellidae
Turritellidae indet., Turritella premortoni
Turritellidae indet. Lovén 1847 turret shell
Turritella premortoni turret shell
 Neogastropoda - Volutidae
Volutidae indet.
Volutidae indet. Rafinesque 1815 volute
 Neogastropoda - Nassariidae
Nassariidae indet.
Nassariidae indet. Iredale 1916 snail
 Neogastropoda - Fasciolariidae
Fasciolariidae indet.
Fasciolariidae indet. Gray 1853 snail
F. sp. a (1), F. sp. c (1), F. sp. (2)
 Neogastropoda - Turridae
Turridae indet.
Turridae indet. Swainson 1840 turrid
T. sp. a (1), T. sp. (2)
 Sorbeoconcha - Naticidae
Naticidae indet.
Naticidae indet. Guilding 1834 moon snail
 Sorbeoconcha - Vitrinellidae
Vitrinellidae indet.
Vitrinellidae indet. Bush 1897 snail
 Sorbeoconcha - Procerithiidae
Nudivagus sp.
Nudivagus sp. snail
N. sp. a
 Opisthobranchia - Haminoeidae
Atys sp.
Atys sp. Montfort 1810 snail
 Opisthobranchia - Retusidae
Retusa emoryi
Bivalvia
 Nuculanida - Nuculanidae
Nuculanidae indet., Nuculana sp., Saccella sp.
Nuculanidae indet. Adams and Adams 1858 pointed nut clam
Nuculana sp. Link 1807 pointed nut clam
N. sp. b
Saccella sp. Woodring 1925 pointed nut clam
 Nuculida - Nuculidae
Nuculidae indet.
Nuculidae indet. Gray 1824 nut clam
 Solemyida - Solemyidae
Solemya bilix
Solemya bilix Awning Clam
 Ostreida - Ostreidae
Ostreidae indet.
Ostreidae indet. Rafinesque 1815 oyster
 Pectinida - Propeamussiidae
Amusium alabamense
Amusium alabamense Aldrich 1886 mud scallop
 Arcida - Limopsidae
Limopsis sp.
Limopsis sp. Sassi 1827 clam
 Arcida - Cucullaeidae
Cucullaea macrodonta, Cucullaea sp.
Cucullaea sp. Lamarck 1801 clam
 Arcida - Arcidae
Striarca ? sp.
Striarca ? sp. Conrad 1862 clam
S.? sp. a
 Lucinida - Lucinidae
Lucinidae indet.
Lucinidae indet. Fleming 1828 clam
L. sp. a (2), L. sp. (2)
 Poromyida - Verticordiidae
Verticordia sp.
Verticordia sp. Sowerby 1844 clam
 Pholadida - Corbulidae
Corbulidae indet.
Corbulidae indet. Lamarck 1818 clam
 Cardiida - Tellinidae
Tellinidae indet.
Tellinidae indet. Blainville 1814 tellin clam
 Carditida - Crassatellidae
Crassatella sp.
Crassatella sp. Lamarck 1799 clam
 Carditida - Carditidae
Carditidae indet., Venericardia eoa
Carditidae indet. Fleming 1820 clam
Venericardia eoa Plummer 1933 clam
Anthozoa
  -
Anthozoa indet.
Anthozoa indet. Ehrenberg 1834
solitary coral