P-31 (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 P1d

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 5601: authorized by Arnold Miller, entered by Karen Layou on 22.10.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Scaphopoda
 Gadilida - Gadilidae
Cadulus ? phoenicea
 Dentaliida - Dentaliidae
Dentalium mediaviense, Dentalium sp.
Dentalium sp. Linnaeus 1758 tusk shell
D. sp. a (1), D. sp. b (2), D. sp. (3)
Gastropoda
 Cerithioidea - Cerithiidae
Cerithiidae indet., Cerithiidae indet., Bittium estellense
Cerithiidae indet. Fleming 1822 cerith snail
C. sp. a
Cerithiidae indet. Fleming 1822 cerith snail
Bittium estellense cerith snail
 Cerithioidea - Turritellidae
Turritella premortoni
 Sorbeoconcha - Naticidae
Naticidae indet.
Naticidae indet. Guilding 1834 moon snail
 Neogastropoda - Olivellidae
Agaronia mediavia
 Neogastropoda - Volutidae
"Volutocorbis texanus" = Athleta (Volutocorbis)
"Volutocorbis texanus" = Athleta (Volutocorbis) volute
 Neogastropoda - Turridae
Turridae indet.
Turridae indet. Swainson 1840 turrid
 Heterostropha - Acteonidae
Tornatellaea sp.
Tornatellaea sp. Conrad 1860 snail
 Heterostropha - Ringiculidae
Ringicula dubia
 Trochoidea - Skeneidae
Solariorbis sp.
Solariorbis sp. Conrad 1865 snail
 Opisthobranchia - Retusidae
Retusa emoryi
 Opisthobranchia - Haminoeidae
Atys sp.
Atys sp. Montfort 1810 snail
Bivalvia
 Nuculanida - Nuculanidae
Jupiteria smirna, Nuculana sp., Nuculana ? saffordana, Nuculana cf. corpulentoides
Jupiteria smirna pointed nut clam
Nuculana sp. Link 1807 pointed nut clam
N. sp. c
Nuculana ? saffordana pointed nut clam
Nuculana cf. corpulentoides pointed nut clam
 Solemyida - Solemyidae
Solemya bilix
Solemya bilix Awning Clam
 Nuculida - Nuculidae
"Nucula mediavia" = Nucula (Nucula) mediavia
"Nucula mediavia" = Nucula (Nucula) mediavia Harris 1896 nut clam
 Poromyida - Verticordiidae
Verticordia sp.
Verticordia sp. Sowerby 1844 clam
 Poromyida - Cuspidariidae
Cuspidaria sp.
Cuspidaria sp. Dall 1886 clam
C. sp. a
 Pholadida - Corbulidae
Corbulidae indet., Corbula milium, Caryocorbula kennedyi, Caryocorbula coloradoensis
Corbulidae indet. Lamarck 1818 clam
 Cardiida - Sportellidae
Sportellidae indet.
Sportellidae indet. Dall 1899 clam
 Cardiida -
"Veneroida indet." = Veneroidei
"Veneroida indet." = Veneroidei Gray 1854 clam
Leptonidae/Montacutidae sp.
 Cardiida - Tellinidae
Tellina sp.
Tellina sp. Linnaeus 1758 tellin clam
T. sp. a
 Cardiida - Semelidae
Semelidae indet.
Semelidae indet. Stoliczka 1870 clam
 Lucinida - Lucinidae
Lucinidae indet.
Lucinidae indet. Fleming 1828 clam
 Carditida - Crassatellidae
Crassatella sp.
Crassatella sp. Lamarck 1799 clam
 Carditida - Carditidae
Carditidae indet., "Venericardia bulla" = Venericardia (Baluchicardia) bulla, Venericardia eoa
Carditidae indet. Fleming 1820 clam
"Venericardia bulla" = Venericardia (Baluchicardia) bulla Dall 1903 clam
Venericardia eoa Plummer 1933 clam
 Pectinida - Propeamussiidae
Amusium alabamense
Amusium alabamense Aldrich 1886 mud scallop
 Ostreida - Gryphaeidae
Pycnodonte sp.
Pycnodonte sp. Fischer von Waldheim 1835 oyster
 Arcida - Cucullaeidae
Cucullaea sp., Cucullaea macrodonta
Cucullaea sp. Lamarck 1801 clam
Anthozoa
  -
Anthozoa indet.
Anthozoa indet. Ehrenberg 1834
solitary coral
 Scleractinia - Caryophylliidae
Caryophyllia sp.
Caryophyllia sp. Lamarck 1801 stony coral