White River Pocket: Uintan, Utah

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Primates - Omomyidae
Ourayia uintensis n. sp. (Osborn 1895)
2 specimens
see Krishtalka 1978: includes type
Macrotarsius jepseni n. sp. (Robinson 1968)
1 specimen
see Krishtalka 1978: type (1 measurement)
Mammalia - Rodentia - Cylindrodontidae
Pareumys troxelli Burke 1935
see Burke 1935a: "Wagonhound Member... White River"; type (1 measurement)
Pareumys grangeri Burke 1935
see Burke 1935a: "Wagonhound Member... White River"; type and referred specimen (2 measurements)
Mammalia - Rodentia - Ischyromyidae
Ischyrotomus compressidens (Peterson 1919)
(1 measurement)
    = Paramys compressidens Peterson 1919
Alroy 2002
probably includes material of Wood 1962
Microparamys dubius (Wood 1949)
see Dawson 1966: "badlands east of White River Pocket"
Mytonomys robustus (Peterson 1919)
probably includes "Wagonhound" material of Wood 1962
Mammalia - Creodonta
Oxyaenodon dysclerus Hay 1902
probably includes type and referred specimen of Peterson 1919 from "White River"
    = Oxyaenodon dysodus Matthew 1899
Alroy 2002
Mammalia - Homacodontidae
Bunomeryx montanus Wortman 1898
Gazin 1955 3 specimens
Hylomeryx annectens Peterson 1919
probably includes type from "Red Bluff wash between White and Green Rivers" (Gazin 1955) or "near Vernal" (Peterson 1919), listed as "near the base of Uinta C" by Peterson 1919 but placed in Uinta B by both Gazin and Kay
Pentacemylus leotensis Gazin 1955
Rose 1985 1 specimen
Mammalia - Oromerycidae
Protylopus petersoni Wortman 1898
Gazin 1955
"several"
Mammalia - Agriochoeridae
Protoreodon medius Peterson 1919
    = Protoreodon pumilus Marsh 1875
Alroy 2002
includes type of "Diplobunops vanhouteni" type, see Gazin 1955
Protoreodon parvus Scott and Osborn 1887
Gazin 1955
referred specimens; type is from Uinta B according to Thorpe 1937; includes "Protoreodon paradoxicus," which is probably the type of Scott 1898
Mammalia - Perissodactyla
Isectolophus annectens Scott and Osborn 1887
may include the type, which according to Peterson 1919 is of uncertain provenance but according to Radinsky 1963 is from "Uinta B"; no other Uinta B specimens are discussed by any author
Mammalia - Perissodactyla - Amynodontidae
Amynodon advenus (Marsh 1875)
probably includes material of Wall 1982 from Uinta B, White River; "A. advenum" of earlier authors; and presumably type of "A. erectus" of Troxell 1921c from "White River"
Mammalia - Perissodactyla - Hyracodontidae
Triplopus obliquidens (Scott and Osborn 1887)
probably includes "T. grangeri" Wood 1927 type from "near the White River... top of Horizon B2"; may include "Hyrachyus douglassi" of Wood 1934 (Triplopus sp. of Radinsky 1967a) from "Uinta B, the Telmatotherium Beds, of White River" that was referred to "Helaletes guyotti" by Osborn
Mammalia - Perissodactyla - Equidae
Epihippus gracilis (Marsh 1871)
Mammalia - Acreodi
Simidectes medius n. sp. (Peterson 1919)
3 specimens
see Coombs 1971: includes type
Mammalia - Condylarthra - Hyopsodontidae
Hyopsodus uintensis Osborn 1902
5 specimens
    = Hyopsodus paulus Leidy 1870
Krishtalka 1979
replaces ID of Gazin 1956b, 1968
Reptilia - Anguidae
? Helodermoides sp. Douglass 1903
Sullivan 1979 1 specimen
USNM 243961, partial skull and body osteoderms
Reptilia
Saniwa ensidens Leidy 1870
ElShafie 2024
see common names

Geography
Country:United States State/province:Utah County:Uintah
Coordinates: 40.1° North, 109.7° West (view map)
Paleocoordinates:42.9° North, 98.7° West
Basis of coordinate:stated in text
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:upper Wagonhound
Local section:Uinta Local bed:4
Local order:bottom to top
Lithology and environment
Primary lithology: not reported
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:biostratigraphic analysis
Taxonomic list comments:this is in Prothero's Willow Creek-Ouray section in the central part of the basin and includes many "Uinta B" small mammals; however, other important Uinta B material is from Wagonhound Canyon to the east (see)
Metadata
Database number:16654
Authorizer:J. Alroy, P. Barrett, P. Holroyd Enterer:J. Alroy, T. Cleary, P. Holroyd
Modifier:J. Alroy Research group:vertebrate
Created:1998-09-21 00:00:00 Last modified:2010-11-23 21:55:03
Access level:the public Released:1998-09-21 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:
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]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
87093 S. J. ElShafie. 2024. Body size estimation from isolated fossil bones reveals deep time evolutionary trends in North American lizards. PLoS ONE 19(1:e0296318):1-25 [P. Holroyd/P. Holroyd/P. Holroyd]
1608 C. L. Gazin. 1955. A review of the Upper Eocene Artiodactyla of North America. Smithsonian Miscellaneous Collections 128(8):1-96 [J. Alroy/J. Alroy/J. Marcot]
2173 L. Krishtalka. 1979. Paleontology and Geology of the Badwater Creek Area, Central Wyoming. Part 18. Revision of Late Eocene Hyopsodus. Annals of Carnegie Museum 48(20):377-389 [J. Alroy/J. Alroy/J. Marcot]
2956 K. D. Rose. 1985. Comparative Osteology of North American Dichobunid Artiodactyls. Journal of Paleontology 59(5):1203-1226 [J. Alroy/J. Alroy/J. Ju]
60385 R. M. Sullivan. 1979. Revision of the Paleogene genus Glyptosaurus (Reptilia, Anguidae). Bulletin of the American Museum of Natural History 163(1):1-72 [P. Barrett/T. Cleary]