PBDB Collection

P-27 (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 5597: authorized by Arnold Miller, entered by Karen Layou on 22.10.1999, edited by Jocelyn Sessa

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

Anthozoa
-	Anthozoa indet. Anthozoa indet. Ehrenberg 1834 solitary corals
Bivalvia
Nuculida - Nuculidae	"Nucula mediavia" = Nucula (Nucula) mediavia "Nucula mediavia" = Nucula (Nucula) mediavia Harris 1896 nut clam
Solemyida - Solemyidae	Solemya bilix Solemya bilix Awning Clam
Nuculanida - Nuculanidae	Nuculanidae indet., Jupiteria smirna, Nuculana ? saffordana, Nuculana sp. Nuculanidae indet. Adams and Adams 1858 pointed nut clam Jupiteria smirna pointed nut clam Nuculana ? saffordana pointed nut clam Nuculana sp. Link 1807 pointed nut clam N. sp. c
Carditida - Carditidae	Venericardia eoa, "Venericardia bulla" = Venericardia (Baluchicardia) bulla Venericardia eoa Plummer 1933 clam "Venericardia bulla" = Venericardia (Baluchicardia) bulla Dall 1903 clam
Carditida - Crassatellidae	Crassatella sp. Crassatella sp. Lamarck 1799 clam
Pholadida - Corbulidae	Corbulidae indet., Caryocorbula coloradoensis Corbulidae indet. Lamarck 1818 clam Caryocorbula coloradoensis clam
Poromyida - Verticordiidae	Verticordia sp. Verticordia sp. Sowerby 1844 clam
Ostreida - Ostreidae	Ostreidae indet. Ostreidae indet. Rafinesque 1815 oyster
Pectinida - Propeamussiidae	Amusium alabamense Amusium alabamense Aldrich 1886 mud scallop
Arcida - Cucullaeidae	Cucullaea macrodonta Cucullaea macrodonta clam
Gastropoda
Opisthobranchia - Haminoeidae	Atys sp. Atys sp. Montfort 1810 snail
Trochoidea - Skeneidae	Solariorbis proius Solariorbis proius snail
Heterostropha - Acteonidae	Acteonidae indet., Tornatellaea texana Acteonidae indet. d'Orbigny 1835 snail Acteonidae sp. A Tornatellaea texana snail
Cerithioidea - Turritellidae	Turritellidae indet. Turritellidae indet. Lovén 1847 turret shell
Cerithioidea - Cerithiidae	Bittium estellense Bittium estellense cerith snail
Sorbeoconcha - Naticidae	Naticidae indet. Naticidae indet. Guilding 1834 moon snail
Sorbeoconcha - Vitrinellidae	Vitrinellidae indet. Vitrinellidae indet. Bush 1897 snail
Neogastropoda - Turridae	Turridae indet. Turridae indet. Swainson 1840 turrid T. sp. a (2), T. indet. (2)
Neogastropoda - Volutidae	"Volutocorbis texanus" = Athleta (Volutocorbis) "Volutocorbis texanus" = Athleta (Volutocorbis) volute
Neogastropoda - Olivellidae	Agaronia mediavia Agaronia mediavia snail
Scaphopoda
Gadilida - Gadilidae	Cadulus sp. Cadulus sp. Philippi 1844 tusk shell
Dentaliida - Dentaliidae	Dentalium sp. Dentalium sp. Linnaeus 1758 tusk shell D. sp b (1), D. sp. (1)