Bridwell Formation: Hemphillian, Texas

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Rodentia
Rodentia indet. Bowdich 1821
Mammalia - Lagomorpha - Leporidae
Hypolagus sp. Dice 1917
    = Archaeolaginae indet.
Alroy 2002
Mammalia - Perissodactyla - Rhinocerotidae
Aphelops sp. Owen 1845
Mammalia - Perissodactyla - Equidae
Nannippus cf. minor (Sellards 1916)
    = Nannippus cf. aztecus Mooser 1968
Alroy 2002
Cormohipparion occidentale (Leidy 1856)
    = Hippotherium sp. Kaup 1832
Alroy 2002
Neohipparion eurystyle (Cope 1893)
Dinohippus interpolatus (Cope 1893)
Astrohippus ansae (Matthew and Stirton 1930)
Mammalia - Tayassuidae
Prosthennops sp. Matthew and Gidley 1904
    = Tayassuinae indet. Palmer 1897
Alroy 2002
Mammalia - Camelidae
Alforjas taylori Harrison 1979
Megatylopus matthewi Webb 1965
? Hemiauchenia sp. Gervais and Ameghino 1880
Hemiauchenia vera (Matthew 1909)
recombined as Pleiolama vera
Mammalia - Antilocapridae
cf. Texoceros sp. Frick 1937
Mammalia - Carnivora - Felidae
Machairodus cf. coloradensis Cook 1922
recombined as Amphimachairodus coloradensis
Mammalia - Carnivora - Canidae
    = Borophagus sp. Cope 1892
Alroy 2002
Mammalia - Proboscidea - Gomphotheriidae
Gomphotheriidae indet. Hay 1922
see common names

Geography
Country:United States State/province:Texas County:Crosby and Lubbock
Coordinates: 33.7° North, 101.5° West (view map)
Paleocoordinates:34.0° North, 99.8° West
Basis of coordinate:based on political unit
Time
Period:Neogene
10 m.y. bin:Cenozoic 6
*Period:Tertiary *Epoch:Miocene
Key time interval:Hemphillian
Age range of interval:10.30000 - 4.90000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Local section:Bridw Local bed:2
Local order:bottom to top
Stratigraphic resolution:formation
Lithology and environment
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Collection methods and comments
Taxonomic list comments: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
Metadata
Database number:18073
Authorizer:J. Alroy Enterer:J. Alroy
Modifier:J. Alroy Research group:vertebrate
Created:1992-08-05 00:00:00 Last modified:2009-12-20 13:23:02
Access level:the public Released:1993-02-18 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:

3715. 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]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]