Elk Creek (640 m) (Eocene of the United States)

Also known as YPM 165, 183, 187, USGS D-1473 (635 m), 1558 (635 m), 1622 (= UCMP V99207; 638 m)

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

• coordinate based on political unit

• local area-level geographic resolution

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

• not clear if B & R 87 levels are in terms of the Schankler-Wing or Bown sections

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 15563: authorized by John Alroy, entered by John Alroy on 18.02.1993

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Theriamorpha - Stylinodontidae
Ectoganus gliriformis1 Cope 1874 taeniodont
 Rodentia - Ischyromyidae
Paramys cf. copei Loomis 1907 rodent
Paramys cf. excavatus Loomis 1907 rodent
 Primates - Microsyopidae
Microsyopidae indet.1 Osborn and Wortman 1892 primate
 Primates - Notharctidae
Cantius abditus1 Gingerich and Simons 1977 primate
 Primates - Omomyidae
Absarokius abbotti Loomis 1906 tarsier
OK, B & R 87: USGS 1622
 Theriamorpha - Phenacodontidae
Phenacodus vortmani Cope 1880 condylarth
 Artiodactyla - Diacodexeidae
Diacodexis sp.1 Cope 1882 even-toed ungulate
"Bunophorus" macropternus Cope 1882 even-toed ungulate
 Procreodi - Arctocyonidae
Thryptacodon antiquus1 Matthew and Granger 1915 condylarth
 Creodonta -
Prolimnocyon antiquus Matthew and Granger 1915 creodont
 Theriamorpha - Viverravidae
Didymictis sp. Cope 1875 placental
"curtidens/lysitensis"
Viverravus sp. Marsh 1872 placental
"V. acutus/gracilis"
 Theriamorpha -
Vulpavus canavus Cope 1881 placental
 Condylarthra - Hyopsodontidae
Hyopsodus sp. Leidy 1870 condylarth
"latidens/miticulus"
Hyopsodus powellianus Cope 1884 condylarth
 Cimolesta - Apatemyidae
Labidolemur kayi2 Simpson 1929 eutherian
"Apatemys chardini/bellulus" DUPLICATE REF 1645 or 1646 or 1647 or 1648 or 1649
 Cimolesta - Coryphodontidae
Coryphodon sp. Owen 1845 pantodont
"2"
 Cimolesta - Esthonychidae
Esthonyx bisulcatus Cope 1874 tillodont
Esthonyx acutidens Cope 1881 tillodont
Reptilia
 Testudines - Geoemydidae
Echmatemys sp.3 Hay 1906 turtle
 Testudines - Pantrionychidae
cf. Plastomenus sp.3 Cope 1873 turtle
probably the "fragmentary trionychids" mentioned later in the paper