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: upper Adobe Town Member (Washakie Formation), Uintan (46.2 - 40.4 Ma)

Environment/lithology: terrestrial

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

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
Mammalia
 Primates -
Primates indet. Linnaeus 1758 primate
 Primates - Omomyidae
Ourayia uintensis Osborn 1895 tarsier
 Cimolesta - Pantolestidae
cf. Pantolestes sp. Cope 1872 eutherian
 Rodentia - Ischyromyidae
Paramys compressidens Peterson 1919 rodent
Leptotomus sp. Matthew 1910 rodent
 Rodentia - Cylindrodontidae
Pareumys grangeri Burke 1935 rodent
 Perissodactyla - Amynodontidae
Amynodon sp. Marsh 1877 odd-toed ungulate
"Amynodon advenus?"
 Perissodactyla - Equidae
Epihippus gracilis Marsh 1871 horse
 Carnivora - Miacidae
Miacis sp. Cope 1872 carnivoran
 Ungulata - Homacodontidae
cf. Mesomeryx grangeri Peterson 1919 even-toed ungulate