Bridwell Formation (Neogene of the United States)

Where: Crosby and Lubbock County, Texas (33.7° N, 101.5° W: paleocoordinates 34.0° N, 99.8° W)

• coordinate based on political unit

When: Hemphillian (10.3 - 4.9 Ma)

• formation-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 18073: authorized by John Alroy, entered by John Alroy on 05.08.1992

Creative Commons license: CC BY (attribution)

Taxonomic list

• upper and middle levels of formation only - does not include lowest level (see Janes Quarry)
technically includes Smart Ranch (see), but the collections appear to be independent of each other
Show authors, comments, and common names
Mammalia
 Proboscidea - Gomphotheriidae
Gomphotheriidae indet.
Gomphotheriidae indet. Hay 1922 gomphothere
 Perissodactyla - Equidae
Dinohippus interpolatus, Astrohippus ansae, Neohipparion eurystyle, Hippotherium sp., Nannippus cf. aztecus
Dinohippus interpolatus Cope 1893 horse
Astrohippus ansae Matthew and Stirton 1930 horse
Neohipparion eurystyle Cope 1893 hipparionine horse
Hippotherium sp. Kaup 1832 hipparionine horse
Nannippus cf. aztecus Mooser 1968 hipparionine horse
 Perissodactyla - Rhinocerotidae
Aphelops sp.
Aphelops sp. Owen 1845 rhinoceros
 Artiodactyla - Antilocapridae
cf. Texoceros sp.
cf. Texoceros sp. Frick 1937 pronghorn
 Artiodactyla - Camelidae
"Hemiauchenia vera" = Pleiolama vera, ? Hemiauchenia sp., Megatylopus matthewi, Alforjas taylori
"Hemiauchenia vera" = Pleiolama vera Matthew 1909 camel
? Hemiauchenia sp. Gervais and Ameghino 1880 camel
Megatylopus matthewi Webb 1965 camel
Alforjas taylori Harrison 1979 camel
 Artiodactyla - Tayassuidae
Tayassuinae indet.
Tayassuinae indet. Palmer 1897 peccary
 Carnivora - Felidae
"Machairodus cf. coloradensis" = Amphimachairodus coloradensis
"Machairodus cf. coloradensis" = Amphimachairodus coloradensis Cook 1922 cat
 Carnivora - Canidae
Borophagus sp.
Borophagus sp. Cope 1892 bone-crushing dog
 Lagomorpha - Leporidae
Archaeolaginae indet.
 Placentalia -
Rodentia indet.
Rodentia indet. Bowdich 1821 rodent