Boysen Reservoir (48FR80) (Eocene of the United States)

Where: Fremont County, Wyoming (43.2° N, 108.2° W: paleocoordinates 48.0° N, 91.4° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Wind River Formation, Wasatchian (55.8 - 50.3 Ma)

Environment/lithology: terrestrial

Primary reference: T. E. White. 1952. Preliminary analysis of the vertebrate fossil fauna of the Boysen Reservoir area. Proceedings of the United States National Museum 102(3296):185-207 [J. Alroy/J. Alroy/J. Marcot]more details

PaleoDB collection 15910: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Terri Cleary

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Squamata -
Saniwa sp. Leidy 1870 lizard
one caudal vertebra
 Squamata - Boidae
Boavus cf. occidentalis Marsh 1871 boa
2 thoracic vertebrae
Mammalia
 Cimolesta - Esthonychidae
Esthonyx acutidens Cope 1881 tillodont
 Primates - Microsyopidae
Microsyops elegans1 Marsh 1871 primate
 Rodentia - Ischyromyidae
Paramys copei1 Loomis 1907 rodent
Lophiparamys murinus1 Matthew 1918 rodent
 Condylarthra - Hyopsodontidae
Hyopsodus wortmani Osborn 1902 condylarth
 Tribosphenida - Phenacodontidae
Meniscotherium chamense1 Cope 1874 condylarth
 Perissodactyla -
Heptodon posticus1 Cope 1882 odd-toed ungulate
 Ferae - Viverravidae
Didymictis altidens Cope 1880 placental
 Carnivora - Miacidae
Miacis latidens Matthew and Granger 1915 carnivoran
 Hyaenodonta - Hyaenodontidae
Didelphodus absarokae2 Cope 1881 eutherian
 Artiodactyla - Diacodexeidae
Diacodexis secans1 Cope 1881 even-toed ungulate
 Sarcobora - Apatemyidae
Apatemys bellulus1 Marsh 1872 insectivoran