Elk Creek (340 m) (Eocene of the United States)

Also known as YPM 125, YPM 135 = UCMP V81071 (343 m), 157 (upper: 336 m), 216 (340 m), USGS D-1201 (344 m), 1288 (336 m), 1294 (342 m), 1373 (338 m), 1493 (344 m)

Where: Big Horn County, Wyoming (44.5° N, 108.0° W: paleocoordinates 49.2° N, 90.8° W)

• coordinate based on political unit

• small collection-level geographic resolution

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

Environment/lithology: terrestrial

Reposited in the UCMP

Primary reference: D. M. Schankler. 1980. Faunal Zonation of the Willwood Formation in the Central Bighorn Basin, Wyoming. University of Michigan Papers on Paleontology 24:99-114 [J. Alroy/J. Alroy/M. Uhen]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 15529: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Patricia Holroyd

Creative Commons license: CC BY (attribution)

Taxonomic list

• YPM 135 and 157 and all USGS localities are in Washakie County, all others are in Big Horn County

•exact level is uncertain if not listed

Mammalia
 Theriamorpha - Viverravidae
Viverravus sp. Marsh 1872 placental
"1"
 Theriamorpha - Erinaceoidae
Dartonius jepseni1 McKenna 1960 placental
 Primates - Omomyidae
Tetonius sp.2 Matthew 1915 tarsier
T. matthewi-ambiguus intergrade; USGS D-1201, 1288, 1294, 1373N, 1493; Y-135, 157, 216
 Cimolesta - Esthonychidae
Esthonyx sp. Cope 1874 tillodont
"1"
Reptilia
 Testudines - Kinosternoidea
Cardichelyon rogerwoodi4 Hutchison 2013 mud turtle
 Testudines -
Planetochelys dithyros4 Hutchison 2013 turtle
 Testudines - Panchelydridae
Protochelydra sp.3 Erickson 1973 turtle