P-10 (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: Biscutum romeini zone, Danian (66.0 - 61.6 Ma)

• composite section from CM-4 and Brazos-1, in foram zone P1a

Environment/lithology: marine; unlithified, bioturbated, silty claystone

• homogenized (from bioturbation) silty claystone with sparse fossils (hansen et al. 1987)

Size class: mesofossils

Collection methods: bulk, mechanical,

Primary reference: T. A. Hansen, B. Upshaw, E. G. Kauffman and W. Gose. 1993. Patterns of molluscan extinction and recovery across the Cretaceous-Tertiary boundary in east Texas; report on new outcrops. Cretaceous Research 14:685-706 [A. Miller/K. Layou/M. Uhen]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 5579: authorized by Arnold Miller, entered by Karen Layou on 18.10.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Pisces
  -
"Pisces indet." = Osteichthyes
"Pisces indet." = Osteichthyes Huxley 1880 bony fish
fish parts
Gastropoda
  -
Gastropoda indet. Cuvier 1795 snail
G. g
 Neogastropoda -
Neogastropoda indet. Thiele 1929 snail
N. a (4), N. g (1)
 Neogastropoda - Fasciolariidae
Anomalofusus sp. Wade 1916 snail
A. substriata or subnodosus
 Neogastropoda - Turridae
Turridae indet. Swainson 1840 turrid
T. c
 Sorbeoconcha - Rostellariidae
Calyptraphorus aldrichi snail
[entered as Calyptrophorus aldrichi]
 Sorbeoconcha - Naticidae
Naticidae indet. Guilding 1834 moon snail
 Sorbeoconcha - Procerithiidae
Nudivagus sp. snail
N. sp. a
Bivalvia
 Nuculanida - Nuculanidae
Nuculana sp. Link 1807 pointed nut clam
N. sp. b
 Thraciida - Periplomatidae
Periploma ? sp. Schumacher 1816 clam
 Pholadida - Corbulidae
"Corbula subengonata" = Cuneocorbula subengonata
"Corbula subengonata" = Cuneocorbula subengonata Dall 1898 clam
 Arcida - Parallelodontidae
Nemodon eufaulensis clam
[entered as Nemodon eufalensis]
 Ostreida - Ostreidae
Ostreidae indet. Rafinesque 1815 oyster
 Pectinida - Propeamussiidae
Amusium alabamense Aldrich 1886 mud scallop