Uptegrove: Hemphillian, Nebraska

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Megalonychidae
Megalonyx cf. curvidens Matthew 1924
Voorhies 1990
Mammalia - Proboscidea - Gomphotheriidae
Gomphotheriidae indet. Hay 1922
Voorhies 1990
Mammalia - Carnivora - Felidae
Machairodus coloradensis Cook 1922
includes type of "M. coloradensis tanneri" of Martin and Schultz 1975
    = Machairodus tanneri Martin and Schultz 1975
Martin 1998
Mammalia - Carnivora - Canidae
    = Borophagus sp. Cope 1892
Alroy 2002
Mammalia - Perissodactyla - Equidae
Dinohippus sp. Quinn 1955
    = Dinohippus cf. leidyanus Osborn 1918
Voorhies 1990
Nannippus lenticularis (Cope 1893)
synonym of Cormohipparion ingenuum
Mammalia - Perissodactyla - Rhinocerotidae
Teleoceras sp. Hatcher 1894
    = Teleoceras fossiger Cope 1878
Mead 1999
Mammalia - Camelidae
Megatylopus cf. gigas (Matthew and Cook 1909)
Hemiauchenia cf. vera (Matthew 1909)
recombined as Pleiolama vera
Mammalia - Rodentia - Mylagaulidae
Epigaulus sp. Gidley 1907
    = Ceratogaulus sp. Matthew 1902
Voorhies 1990
see common names

Geography
Country:United States State/province:Nebraska County:Cheyenne
Coordinates: 41.1° North, 103.0° West (view map)
Paleocoordinates:41.4° North, 101.3° West
Basis of coordinate:based on political unit
Geographic resolution:small collection
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
Lithology and environment
Primary lithology: not reported
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Collection methods and comments
Reason for describing collection:general faunal/floral analysis
Museum repositories:UNSM
Taxonomic list comments:"superposition" of this fauna above Oshkosh and Greenwood Canyon indicated by Tedford et al. 1987 Fig. 6.2 appears to be based on fission track dates and biochronology
there are NO legitimate small mammals from this locality; ALL such records are recent intrusives
bogus list of Kent 1967: "Citellus kimballensis" type Thomomys sp. "Perognathus sp."
Metadata
Also known as:UNSM Cn-101
Database number:18441
Authorizer:J. Alroy, J. Marcot Enterer:J. Alroy, J. Marcot
Modifier:J. Alroy Research group:vertebrate
Created:1992-08-05 00:00:00 Last modified:2009-12-18 13:05:29
Access level:the public Released:1992-08-05 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:

3504. M. R. Voorhies. 1984. "Citellus kimballensis" Kent and "Propliophenacomys uptegrovensis" Martin, Supposed Miocene Rodents, Are Recent Intrusives. Journal of Paleontology 58(1):254-258 [J. Alroy/J. Alroy/J. Ju]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
7589 L. D. Martin. 1998. Felidae. In C. M. Janis, K. M. Scott, and L. L. Jacobs (eds.), Evolution of Tertiary Mammals of North America 1:236-242 [J. Alroy/J. Alroy/J. Alroy]
25465% 1540A. J. Mead. 1999. Enamel hypoplasia in Miocene rhinoceroses (Teleoceras) from Nebraska; evidence of severe physiological stress. Journal of Vertebrate Paleontology 19(2):391-397 [J. Alroy/J. Alroy/M. Carrano]
3510 M. R. Voorhies. 1990. Vertebrate biostratigraphy of the Ogallala Group in Nebraska. In T. C. Gustavson (ed.), Geologic Framework and Regional Hydrology: Upper Cenozoic Blackwater Draw and Ogallala Formations, Great Plains 115-151 [J. Alroy/J. Alroy/J. Marcot]