P-25 (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 5594: 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
 Dentaliida - Dentaliidae
Dentalium sp.
Dentalium sp. Linnaeus 1758 tusk shell
D. sp. a (1), D. sp. b (1), D. sp. (1)
Bivalvia
 Mytilida - Mytilidae
Mytilidae indet.
Mytilidae indet. Rafinesque 1815 mussel
 Arcida - Cucullaeidae
Cucullaea macrodonta
 Pectinida - Propeamussiidae
Amusium alabamense
Amusium alabamense Aldrich 1886 mud scallop
 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
 Lucinida - Lucinidae
Lucinidae "sp A.", Lucinidae indet.
Lucinidae "sp A." Fleming 1828 clam
Lucinidae indet. Fleming 1828 clam
 Pholadida - Corbulidae
Corbulidae indet., Corbula milium, Caryocorbula coloradoensis
Corbulidae indet. Lamarck 1818 clam
 Cardiida - Semelidae
Semelidae indet.
Semelidae indet. Stoliczka 1870 clam
 Cardiida - Tellinidae
Tellinidae indet., Tellina cf. quihi
Tellinidae indet. Blainville 1814 tellin clam
Tellina cf. quihi tellin clam
 Cardiida -
"Veneroida indet." = Veneroidei
"Veneroida indet." = Veneroidei Gray 1854 clam
Leptonidae/Montacutidae sp.
 Cardiida - Kelliellidae
Kelliellidae indet.
Kelliellidae indet. Fischer 1887 clam
 Hiatellida - Hiatellidae
Panopea sp.
Panopea sp. Menard 1807 clam
 Poromyida - Cuspidariidae
Cuspidaria sp.
Cuspidaria sp. Dall 1886 clam
C. sp. a
 Nuculanida - Nuculanidae
Jupiteria smirna, Nuculana ? saffordana, Nuculana cf. corpulentoides, Nuculana sp.
Jupiteria smirna pointed nut clam
Nuculana ? saffordana pointed nut clam
Nuculana cf. corpulentoides pointed nut clam
Nuculana sp. Link 1807 pointed nut clam
N. sp. c
 Solemyida - Solemyidae
Solemya bilix
Solemya bilix Awning Clam
 Nuculida - Nuculidae
"Nucula mediavia" = Nucula (Nucula) mediavia
"Nucula mediavia" = Nucula (Nucula) mediavia Harris 1896 nut clam
Gastropoda
 Trochoidea - Skeneidae
Solariorbis proius, Solariorbis sp.
Solariorbis sp. Conrad 1865 snail
S. sp. a
 Opisthobranchia - Retusidae
Retusa emoryi
 Opisthobranchia - Haminoeidae
Atys sp.
Atys sp. Montfort 1810 snail
 Heterostropha - Acteonidae
Tornatellaea texana
 Heterostropha - Ringiculidae
Ringicula dubia, Ringicula sp.
Ringicula sp. Deshayes 1838 snail
R. sp. a
 Cerithioidea - Litiopidae
Litiopa sp.
Litiopa sp. Rang 1829 snail
L. sp. a
 Cerithioidea - Cerithiidae
Cerithiidae indet., Bittium estellense
Cerithiidae indet. Fleming 1822 cerith snail
C. sp. b
Bittium estellense cerith snail
 Cerithioidea - Turritellidae
Turritella premortoni, Turritella prehumerosa
 Sorbeoconcha - Naticidae
Naticidae indet., Polinices ? julianna
Naticidae indet. Guilding 1834 moon snail
 Sorbeoconcha - Vitrinellidae
Vitrinellidae indet.
Vitrinellidae indet. Bush 1897 snail
 Neogastropoda - Olivellidae
Agaronia mediavia
 Neogastropoda - Turridae
Turridae indet.
Turridae indet. Swainson 1840 turrid
T. sp. a
 Neogastropoda - Volutidae
"Volutocorbis texanus" = Athleta (Volutocorbis)
"Volutocorbis texanus" = Athleta (Volutocorbis) volute