Pawnee Buttes (Upper Beds): Miocene, Colorado

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Perissodactyla - Rhinocerotidae
Teleoceras sp. Hatcher 1894
    = Aphelops planiceps n. sp. Osborn 1904
Osborn 1904
synonym of Teleoceras medicornutum
Mammalia - Perissodactyla - Equidae
Neohipparion coloradense (Osborn 1918)
recombined as Merychippus coloradense
"Neohipparion"; from Euhl Pit
Protohippus labrosus n. sp. Cope 1874
Cope 1874
recombined as Merychippus labrosus
Pseudhipparion sp. Ameghino 1904
Pliohippus sp. Marsh 1874
Merychippus campestris n. sp. Gidley 1907
Gidley 1907
synonym of Pliohippus mirabilis
AMNH 9069
Parahippus coloradensis n. sp. Gidley 1907
Osborn 1918
Hypohippus osborni n. sp. Gidley 1907
Gidley 1907
AMNH 9407, 9395
Mammalia - Antilocapridae
Merycodus sp. Leidy 1854
Mammalia - Carnivora - Ursidae
Ursavus pawniensis Frick 1926
at Tapir Hill and Uhl Pit: Hunt 1998a
Mammalia - Rodentia - Cricetidae
Democricetodon sp. Fahlbusch 1964
    = Cricetidae indet. Fischer von Waldheim 1817
Alroy 2002
replaces ID of Galbreath 1966: this genus is unrecorded elsewhere in North America; Galbreath was following Fahlbusch's taxonomy, which was rejected by later authors such as Engesser 1979; may actually be Copemys; exact locality not given
Mammalia - Rodentia - Mylagaulidae
Mylagaulus sp. Cope 1878
    = Mylagaulidae indet. Cope 1881
Alroy 2002
see common names

Geography
Country:United States State/province:Colorado County:Weld
Coordinates: 40.8° North, 104.2° West (view map)
Paleocoordinates:41.4° North, 101.2° West
Basis of coordinate:based on political unit
Time
Period:Neogene Epoch:Miocene
10 m.y. bin:Cenozoic 5-6
*Period:Tertiary
Key time interval:Miocene
Age range of interval:23.03000 - 5.33300 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Local section:PwnCr Local bed:5
Local order:bottom to top
Stratigraphic resolution:member
Lithology and environment
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Collection methods and comments
Reason for describing collection:biostratigraphic analysis
Taxonomic list comments:from channels cutting into the Pawnee Creek Fm. and overlying Eubanks and Horse and Mastodon Quarries (see)
"Nothocyon vulpinus coloradoensis" Thorpe 1922e: probably from Gerry's Ranch (see also Wang et al. 1999)
Metadata
Also known as:Euhl Pit; Tapir Hill; Uhl Pit
Database number:18310
Authorizer:J. Alroy, J. Marcot Enterer:J. Alroy, J. Marcot
Modifier:J. Alroy Research group:vertebrate
Created:1995-03-26 00:00:00 Last modified:2006-09-13 00:45:45
Access level:the public Released:1995-03-26 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:
6198. R. H. Tedford, T. Galusha, M. F. Skinner, B. E. Taylor, R. W. Fields, J. R. Macdonald, J. M. Rensberger, S. D. Webb, and D. P. Whistler. 1987. Faunal succession and biochronology of the Arikareean through Hemphillian interval (late Oligocene through earliest Pliocene epochs) in North America. In M. O. Woodburne (ed.), Cenozoic Mammals of North America: Geochronology and Biostratigraphy 153-210 [J. Alroy/J. Alroy/P. Wagner]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
53327 E. D. Cope. 1874. Report on the stratigraphy and Pliocene vertebrate paleontology of northern Colorado. Bulletin of the United States Geological and Geographical Survey of the Territories 1(1):9-22 [J. Marcot/J. Marcot/M. Carrano]
55058 J. W. Gidley. 1907. Revision of the Miocene and Pliocene Equidae of North America. Bulletin of the American Museum of Natural History 23(35):865-934 [J. Marcot/J. Marcot/J. Marcot]
6244 B. J. MacFadden. 1984. Systematics and phylogeny of Hipparion, Neohipparion, Nannippus, and Cormohipparion (Mammalia, Equidae) from the Miocene and Pliocene of the New World. Bulletin of the American Museum of Natural History 179(1):1-195 [J. Alroy/J. Alroy/J. Marcot]
51739 H. F. Osborn. 1904. New Miocene rhinoceroses, with revision of known species. Bulletin of the American Museum of Natural History 20(27):307-326 [J. Marcot/J. Marcot]
2702 H. F. Osborn. 1918. Equidae of the Oligocene, Miocene, and Pliocene of North America, iconographic type revision. Memoirs of the American Museum of Natural History 2(1):1-217 [J. Alroy/J. Alroy/J. Marcot]