Sand Butte Level 4 (Eocene of the United States)

Where: Sweetwater County, Wyoming (41.7° N, 109.0° W: paleocoordinates 46.6° N, 92.6° W)

• coordinate based on political unit

When: Wasatch Formation, Wasatchian (55.8 - 50.3 Ma)

Environment/lithology: terrestrial

Primary reference: C. L. Gazin. 1965. Early Eocene mammalian faunas and their environment in the vicinity of the Rock Springs Uplift, Wyoming. Wyoming Geological Association Guidebook 19:171-180 [J. Alroy/J. Alroy/J. Marcot]more details

PaleoDB collection 15723: authorized by John Alroy, entered by John Alroy on 18.02.1993

Creative Commons license: CC BY (attribution)

Taxonomic list

• Graybullian
Show authors, comments, and common names
Mammalia
 Condylarthra - Hyopsodontidae
Hyopsodus sp.
Hyopsodus sp. Leidy 1870 condylarth
"H. loomisi or a small variant of H. miticulus"
 Insectivora -
Insectivora indet.
Insectivora indet. Bowdich 1821 insectivoran
 Perissodactyla - Equidae
Equidae indet.
Equidae indet. Gray 1821 horse
 Artiodactyla - Diacodexeidae
Diacodexis sp.
Diacodexis sp. Cope 1882 even-toed ungulate
 Theriamorpha -
Miacis sp.
Miacis sp. Cope 1872 placental
 Creodonta - Hyaenodontidae
cf. Prototomus sp.
cf. Prototomus sp. Cope 1874 creodont
 Theriamorpha - Pantolestoidae
cf. Palaeosinopa lutreola
cf. Palaeosinopa lutreola Matthew 1918 placental
 Placentalia -
Rodentia indet., Primates indet.
Rodentia indet. Bowdich 1821 rodent
Primates indet. Linnaeus 1758 primate
 Primates - Omomyidae
"Anemorhysis pearcei" = Tetonoides pearcei, cf. Tetonius sp.
"Anemorhysis pearcei" = Tetonoides pearcei Gazin 1962 tarsier
cf. Tetonius sp. Matthew 1915 tarsier
 Primates - Notharctidae
Cantius cf. frugivorus
Cantius cf. frugivorus Cope 1875 primate
 Primates - Microsyopidae
Microsyops cf. angustidens
Microsyops cf. angustidens Matthew 1915 primate