Elk Creek (590 m) (Eocene of the United States)

Also known as YPM 20, 23, 171, 173, 177, 186, 314, USGS D-1436 (585 m), 1175, 1573

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

• Paleocoordinates: 52.2° N, 79.9° W (Wright 2013)

• coordinate based on political unit

• small collection-level geographic resolution

When: Willwood Formation, Wasatchian (54.9 - 50.5 Ma)

Environment/lithology: terrestrial

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 15555: authorized by John Alroy, entered by John Alroy on 18.02.1993

Creative Commons license: CC0 (CC0)

Taxonomic list

• possibly relevant: Dissacus serior O'Leary and Rose 1995a: type, USGS D-1754, "511-m level"
YPM 314 and USGS 1573 are in Washakie County
Show authors, comments, and common names
Mammalia
 Leptictida - Leptictidae
Prodiacodon tauricinerei
Prodiacodon tauricinerei Jepsen 1930 eutherian
 Macroscelidea - Amphilemuridae
Macrocranion nitens
Macrocranion nitens Matthew 1918 elephant shrew
 Condylarthra - Hyopsodontidae
Hyopsodus sp., Hyopsodus powellianus
Hyopsodus sp. Leidy 1870 condylarth
"latidens/miticulus"
Hyopsodus powellianus Cope 1884 condylarth
 Rodentia - Ischyromyidae
Paramys cf. excavatus, Paramys cf. copei
Paramys cf. excavatus Loomis 1907 rodent
Paramys cf. copei Loomis 1907 rodent
 Primates - Omomyidae
Absarokius metoecus2, Absarokius abbotti
Absarokius metoecus2 Bown and Rose 1987 tarsier
Y-314, USGS D-1573
Absarokius abbotti Loomis 1906 tarsier
OK, B & R 87: Y-314, USGS D-1175, 1436, 1573
 Primates - Notharctidae
Cantius nunienus1, Cantius abditus1
Cantius nunienus1 Cope 1881 primate
Cantius abditus1 Gingerich and Simons 1977 primate
 Primates - Paromomyidae
Phenacolemurinae indet.
Phenacolemurinae indet. Simpson 1955 primate
"Phenacolemur sp. 1" and "P. sp. 2"
 Tribosphenida - Pantolestoidae
Palaeosinopa veterrima
Palaeosinopa veterrima Matthew 1901 placental
 Ferae -
Miacis sp.1, Vulpavus australis, Vulpavus canavus, Uintacyon asodes
Miacis sp.1 Cope 1872 placental
Vulpavus australis Matthew and Granger 1915 placental
Vulpavus canavus Cope 1881 placental
Uintacyon asodes Gazin 1952 placental
 Ferae - Viverravidae
Viverravus sp., Didymictis sp.
Viverravus sp. Marsh 1872 placental
"V. acutus/gracilis"
Didymictis sp. Cope 1875 placental
"curtidens/lysitensis"
 Creodonta - Oxyaenidae
Oxyaena sp.
Oxyaena sp. Cope 1874 creodont
"intermedia/forcipata"
 Creodonta - Hyaenodontidae
Prototomus sp.
Prototomus sp. Cope 1874 creodont
"1"
 Perissodactyla -
Heptodon calciculus, Heptodon posticus
Heptodon calciculus Cope 1880 odd-toed ungulate
Heptodon posticus Cope 1882 odd-toed ungulate
 Perissodactyla - Equidae
"Hyracotherium cf. index" = Minippus index, "Hyracotherium grangeri" = Sifrhippus grangeri
"Hyracotherium cf. index" = Minippus index Cope 1873 horse
"Hyracotherium grangeri" = Sifrhippus grangeri Gingerich 1989 horse
"H. sp. 1"
 Tribosphenida - Phenacodontidae
Phenacodus sp.1, Phenacodus vortmani
Phenacodus sp.1 Cope 1873 condylarth
Phenacodus vortmani Cope 1880 condylarth
 Procreodi - Arctocyonidae
Anacodon ursidens, Thryptacodon antiquus
Anacodon ursidens Cope 1882 condylarth
Thryptacodon antiquus Matthew and Granger 1915 condylarth
 Artiodactyla - Diacodexeidae
Diacodexis sp.1, Bunophorus sp.1
Diacodexis sp.1 Cope 1882 even-toed ungulate
Bunophorus sp.1 Sinclair 1914 even-toed ungulate
 Cimolesta - Esthonychidae
Esthonyx bisulcatus
Esthonyx bisulcatus Cope 1874 tillodont
1Alroy 2002; 2Bown and Rose 1987