White River Pocket (Eocene of the United States)

Where: Uintah County, Utah (40.1° N, 109.7° W: paleocoordinates 42.9° N, 98.7° W)

• coordinate stated in text

When: upper Wagonhound Member (Uinta Formation), Uintan (46.2 - 40.4 Ma)

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Primary reference: 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]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 16654: authorized by John Alroy, entered by John Alroy on 21.09.1998, edited by Terri Cleary

Creative Commons license: CC BY (attribution)

Taxonomic list

• 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)
Reptilia
 Squamata - Anguidae
? Helodermoides sp.5 Douglass 1903 squamates
USNM 243961, partial skull and body osteoderms
Mammalia
 Primates - Omomyidae
Ourayia uintensis n. sp. Osborn 1895 tarsier
see Krishtalka 1978: includes type
Macrotarsius jepseni n. sp. Robinson 1968 tarsier
see Krishtalka 1978: type
 Rodentia - Ischyromyidae
Microparamys dubius Wood 1949 rodent
see Dawson 1966: "badlands east of White River Pocket"
Paramys compressidens1 Peterson 1919 rodent
Mytonomys robustus Peterson 1919 rodent
probably includes "Wagonhound" material of Wood 1962
 Rodentia - Cylindrodontidae
Pareumys grangeri Burke 1935 rodent
see Burke 1935a: "Wagonhound Member... White River"; type and referred specimen
Pareumys troxelli Burke 1935 rodent
see Burke 1935a: "Wagonhound Member... White River"; type
 Perissodactyla -
Isectolophus annectens Scott and Osborn 1887 odd-toed ungulate
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
 Perissodactyla - Amynodontidae
Amynodon advenus Marsh 1875 odd-toed ungulate
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"
 Perissodactyla - Hyracodontidae
Triplopus obliquidens Scott and Osborn 1887 odd-toed ungulate
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
 Perissodactyla - Equidae
Epihippus gracilis Marsh 1871 horse
 Ungulata - Hyopsodontidae
Hyopsodus paulus3 Leidy 1870 condylarth
 Ungulata - Homacodontidae
Hylomeryx annectens Peterson 1919 even-toed ungulate
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
Bunomeryx montanus2 Wortman 1898 even-toed ungulate
Pentacemylus leotensis4 Gazin 1955 even-toed ungulate
 Ungulata - Oromerycidae
Protylopus petersoni2 Wortman 1898 even-toed ungulate
"several"
 Ungulata - Agriochoeridae
Protoreodon pumilus1 Marsh 1875 agriochoerid
Protoreodon parvus2 Scott and Osborn 1887 agriochoerid
referred specimens; type is from Uinta B according to Thorpe 1937; includes "Protoreodon paradoxicus," which is probably the type of Scott 1898
 Acreodi -
Simidectes medius n. sp. Peterson 1919 mesonychian
see Coombs 1971: includes type
 Hyaenodonta -
Oxyaenodon dysodus1 Matthew 1899 eutherian
probably includes type and referred specimen of Peterson 1919 from "White River"