Couch Formation (Lower Member) (Miocene of the United States)

Where: Crosby County, Texas (33.7° N, 101.1° W: paleocoordinates 34.2° N, 98.2° W)

• coordinate based on political unit

When: Miocene (23.0 - 5.3 Ma)

• member-level stratigraphic resolution

Environment/lithology: terrestrial

Primary reference: D. A. Winkler. 1990. Sedimentary Facies and Biochronology of the Upper Tertiary Ogallala Group, Blanco and Yellow House Canyons, Texas Panhandle. In T. C. Gustavson (ed.), Geologic Framework and Regional Hydrology: Upper Cenozoic Blackwater Draw and Ogallala Formations, Great Plains 39-55 [J. Alroy/J. Alroy/J. Marcot]more details

PaleoDB collection 18103: authorized by John Alroy, entered by John Alroy on 05.08.1992

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Mammalia
 Artiodactyla - Merycoidodontidae
"Merychyus novomexicanus" = Ustatochoerus medius novomexicanus
"Merychyus novomexicanus" = Ustatochoerus medius novomexicanus Frick 1929 oreodont
 Artiodactyla - Camelidae
Procamelus grandis
Procamelus grandis Gregory 1939 camel
 Artiodactyla - Antilocapridae
Antilocapridae indet.
Antilocapridae indet. Gray 1866 pronghorn
 Perissodactyla - Equidae
Pliohippus cf. pernix, Hippotherium sp., Pseudhipparion cf. hessei
Pliohippus cf. pernix Marsh 1874 horse
Hippotherium sp. Kaup 1832 hipparionine horse
Pseudhipparion cf. hessei Webb and Hulbert 1986 hipparionine horse