McCormick (Pleistocene of the United States)

Also known as P-180

Where: Randall County, Texas (35.1° N, 101.8° W: paleocoordinates 35.0° N, 101.8° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Late/Upper Pleistocene (0.1 - 0.0 Ma)

• a "portion of the mollusks" closely associated with and even found inside the skull "yielded a date of 10,800 +/- 835 years B.P."

• bed-level stratigraphic resolution

Environment/lithology: lacustrine - small; unlithified, gray, blue, carbonaceous claystone

• "probably... a small lake deposit"
• "blue-gray to black organic clay" also described simply as "blue-gray organic clay"

Size classes: macrofossils, mesofossils

Collected by J. Mathews, J. T. Hughes in 1965

Collection methods: quarrying, surface (in situ)

• Panhandle-Plains Historical Museum collection

•"the skull was found buried upside down [and eroding out by Mathews]... about one foot above the level of the creek" and was excavated afterwards by Hughes

Primary reference: G. E. Schultz and E. P. Cheatum. 1970. Bison occidentalis and associated invertebrates from the late Wisconsin of Randall County, Texas. Journal of Paleontology 44(5):836-850 [J. Alroy/J. Alroy]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 93554: authorized by John Alroy, entered by John Alroy on 23.01.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

Actinopteri
 Centrarchiformes - Centrarchidae
Mammalia
 Artiodactyla - Bovidae
"Bison occidentalis" = Bison antiquus
"Bison occidentalis" = Bison antiquus Leidy 1852 bison
Gastropoda
 Heterostropha - Lymnaeidae
Stagnicola bulimoides snail
"S. bulimoides techella"
 Heterostropha - Planorbidae
 Heterostropha - Physidae
 Stylommatophora - Gastrocoptidae
 Stylommatophora - Pupillidae
 Stylommatophora - Valloniidae
 Stylommatophora - Vertiginidae
 Stylommatophora - Helicodiscidae
 Stylommatophora - Zonitidae
Hawaiia minuscula true glass snail
 Stylommatophora - Succineidae
Succinea sp. Draparnaud 1801 amber snail
 Heterostropha - Acteonidae
"Pupilla blandi" = Pupa (Pupilla)
"Pupilla blandi" = Pupa (Pupilla) snail
Bivalvia
 Cardiida - Sphaeriidae
Pisidium nitidum Jenyns 1832 pea clam
Sphaerium striatinum fingernail clam
Ostracoda
 Podocopida - Candonidae
 Podocopida - Cyprididae