Washakie B (Upper) (Eocene of the United States)

Where: Sweetwater County, Wyoming (41.7° N, 109.0° W: paleocoordinates 44.4° N, 97.7° W)

• coordinate based on political unit

When: Adobe Town, upper unit Member (Washakie Formation), Uintan (46.2 - 39.7 Ma)

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Primary reference: S. M. McCarroll, J. J. Flynn, and W. D. Turnbull. 1996. Biostratigraphy and magnetostratigraphy of the Bridgerian-Uintan Washakie Formation, Washakie Basin, Wyoming. In D. R. Prothero and R. J. Emry (eds.), The Terrestrial Eocene-Oligocene Transition in North America 25-39 [J. Alroy/J. Alroy/J. Marcot]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 16649: authorized by John Alroy, entered by John Alroy on 26.07.1994

Creative Commons license: CC BY (attribution)

Taxonomic list

• this unit spans beds 675 to 708 of Roehler and is above the interval of known magnetic polarity in the formation
thought by McCarroll 1995 to be equivalent to either Uinta B1 or B2
Show authors, comments, and common names
Mammalia
 Perissodactyla - Equidae
Epihippus gracilis
Epihippus gracilis Marsh 1871 horse
 Perissodactyla - Amynodontidae
Amynodon sp.
Amynodon sp. Marsh 1877 odd-toed ungulate
"Amynodon advenus?"
 Artiodactyla - Homacodontidae
cf. Mesomeryx grangeri
cf. Mesomeryx grangeri Peterson 1919 even-toed ungulate
 Theriamorpha -
Miacis sp.
Miacis sp. Cope 1872 placental
 Theriamorpha - Pantolestoidae
cf. Pantolestes sp.
cf. Pantolestes sp. Cope 1872 placental
 Rodentia - Ischyromyidae
Leptotomus sp., Paramys compressidens
Leptotomus sp. Matthew 1910 rodent
Paramys compressidens Peterson 1919 rodent
 Rodentia - Cylindrodontidae
Pareumys grangeri
Pareumys grangeri Burke 1935 rodent
 Placentalia -
Primates indet.
Primates indet. Linnaeus 1758 primate
 Primates - Omomyidae
Ourayia uintensis
Ourayia uintensis Osborn 1895 tarsier