White River (Upper Uinta B1): Uintan, Utah

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
Crocodilus clavis Cope 1871
Peterson 1919
nomen dubium belonging to Crocodylus
"horizon A near White River"
Mammalia - Acreodi - Mesonychidae
Harpagolestes uintensis (Scott 1888)
Prothero 1996
probably "H. sp." of Riggs 1912 from White River Canyon; possibly H. uintensis of Peterson 1919 from "horizon B" in Wagonhound Bend Canyon; probably includes type of Scott and Osborn 1887
Mesonyx obtusidens Cope 1872
Osborn 1929
probably the Metarhinus Beds material of Mesonyx mentioned by Riggs 1912
Mammalia - Perissodactyla - Brontotheriidae
Metarhinus fluviatilis n. sp. Osborn 1908
Osborn 1908
from "Uinta A"; also "M. riparius" type of Riggs 1912 from Metarhinus Sandstone in White River Canyon; also possibly "M. earlei" type of Osborn 1908 and "M. cristatus" type of Riggs 1912 from Metarhinus Sandstone
Rhadinorhinus abbotti n. sp. Riggs 1912
    = Metarhinus diploconus Osborn 1895
Riggs 1912
Metarhinus Beds
Dolichorhinus longiceps Douglass 1909
    = Dolichorhinus sp. Hatcher 1895
Osborn 1929
synonym of Sphenocoelus
CM specimen from "a low level in Uinta B1" but not the base; and "Mesatirhinus superior" Riggs 1912: type, Metarhinus Sandstones in White River Canyon; neither species discussed by Mader 1989
Mesatirhinus superior n. sp. Riggs 1912
Riggs 1912
synonym of Sphenocoelus intermedius
Mammalia - Perissodactyla - Chalicotheriidae
Eomoropus amarorum (Cope 1881)
Prothero 1996
Mammalia - Perissodactyla
Forstercooperia grandis n. sp. (Peterson 1919)
    = Rhinocerotoidea indet. Gray 1821
Alroy 2002
see Wood 1934; from "near White River"; no other specimens were known to Wood
Mammalia - Perissodactyla - Hyracodontidae
Triplopus sp. Cope 1880
    = Triplopus obliquidens Scott and Osborn 1887
Prothero 1996
in part
Triplopus sp. Cope 1880
    = Triplopus implicatus Cope 1873
Prothero 1996
in part; "T.
Mammalia - Perissodactyla - Amynodontidae
Amynodon sp. Marsh 1877
    = Amynodon advenus Marsh 1875
Stock 1939
Stock's identification and stratigraphic data for this specimen (CM 11983) are not challenged by Wilson and Schiebout 1981
Mammalia - Agriochoeridae
Protoreodon sp. Scott and Osborn 1887
    = Protoreodon parvus Scott and Osborn 1887
Prothero 1996
is listed by Wood et al. 1941 but no artiodactyls are present "Contrary to the claim of Wood et al. 1941" according to Krishtalka et al.
Mammalia - Dinocerata - Uintatheriidae
Eobasileus uintensis n. sp. Osborn 1929
    = Eobasileus cornutus Cope 1872
Alroy 2002
of Osborn 1929 from the Metarhinus Sandstone; said to be from 2 mi E of Bonanza Mine, Uintah Co. UT by Wheeler 1961
Uintatherium anceps (Marsh 1871)
    = Uintatherium sp. Leidy 1872
Prothero 1996
apparently additional material either not known to Wheeler 1961, or of provenance not known to him; however, Wheeler's specifically indeterminate identification is retained because it is likely he did see the material
see common names

Geography
Country:United States State/province:Utah County:Uintah
Coordinates: 40.2° North, 109.9° West (view map)
Paleocoordinates:43.0° North, 98.9° West
Basis of coordinate:based on political unit
Time
Period:Paleogene Epoch:Eocene
10 m.y. bin:Cenozoic 2-3
*Period:Tertiary
Key time interval:Uintan
Age range of interval:46.20000 - 39.70000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Uinta Member:Wagonhound
Local section:Uinta Local bed:3
Local order:bottom to top
Lithology and environment
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Collection methods and comments
Reason for describing collection:biostratigraphic analysis
Taxonomic list comments:almost all of this material can be confirmed as coming from the Metarhinus Beds on White River Canyon and adjacent Wagonhound Canyon based on Riggs 1912; this unit is called Uinta B1 by Osborn 1929 but "Uinta A" or "horizon A" by Osborn 1895, Riggs 1912, Peterson 1919, Wood 1927, Wood et al. 1941, and Krishtalka et al. 1987
stratigraphically questionable record of Oromeryx plicatus listed by Prothero 1996a
Metadata
Database number:16656
Authorizer:J. Alroy, J. Marcot Enterer:J. Alroy, J. Marcot
Modifier:J. Alroy Research group:vertebrate
Created:1998-09-21 00:00:00 Last modified:2006-09-13 00:45:45
Access level:the public Released:1998-09-21 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:
6259. L. Krishtalka, R. K. Stucky, R. M. West, M. C. McKenna, C. C. Black, T. M. Bown, M. R. Dawson, D. J. Golz, J. J. Flynn, J. A. Lillegraven, and W. D. Turnbull. 1987. Eocene (Wasatchian through Duchesnean) biochronology of North America. In M. O. Woodburne (ed.), Cenozoic Mammals of North America: Geochronology and Biostratigraphy 77-117 [J. Alroy/J. Alroy/M. Uhen]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
2700 H. F. Osborn. 1908. New or little known titanotheres from the Eocene and Oligocene. Bulletin of the American Museum of Natural History 24(32):599-617 [J. Alroy/J. Alroy]
2708 H. F. Osborn. 1929. New Eurasiatic and American proboscideans. American Museum Novitates 393:1-22 [J. Alroy/J. Alroy/M. Carrano]
2761 O. A. Peterson. 1919. Report Upon the Material Discovered in the Upper Eocene of the Uinta Basin by Earl Douglas in the Years 1908-1909, and by O. A. Peterson in 1912. Annals of Carnegie Museum 12(2):40-168 [J. Alroy/J. Alroy/J. Marcot]
2802 D. R. Prothero. 1996. Magnetic stratigraphy and biostratigraphy of the middle Eocene Uinta Formation, Uinta Basin, Utah. In D. R. Prothero and R. J. Emry (eds.), The Terrestrial Eocene-Oligocene Transition in North America 3-24 [J. Alroy/J. Alroy/J. Alroy]
2909 E. S. Riggs. 1912. New or Little Known Titanotheres From the Lower Uintah Formations with Notes on the Stratigraphy and Distribution of Fossils. Geological Series, Field Museum of Natural History 4(2):17-41 [J. Alroy/J. Alroy/J. Marcot]
3282 C. Stock. 1939. Eocene Amynodonts from Southern California. Proceedings of the National Academy of Sciences 25(6):270-275 [J. Alroy/J. Alroy/J. Marcot]