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 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
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: CC BY (attribution)
Taxonomic list
YPM 314 and USGS 1573 are in Washakie County
Mammalia | |
Hyopsodus powellianus Cope 1884 condylarth | |
Macrocranion nitens Matthew 1918 elephant shrew | |
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Paramys cf. excavatus Loomis 1907 rodent
Paramys cf. copei Loomis 1907 rodent | |
Thryptacodon antiquus Matthew and Granger 1915 condylarth
Anacodon ursidens Cope 1882 condylarth | |
"Hyracotherium grangeri" = Sifrhippus grangeri, "Hyracotherium cf. index" = Minippus index
"Hyracotherium cf. index" = Minippus index Cope 1873 horse | |
Heptodon posticus Cope 1882 odd-toed ungulate
Heptodon calciculus Cope 1880 odd-toed ungulate | |
Phenacodus vortmani Cope 1880 condylarth | |
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Vulpavus australis Matthew and Granger 1915 placental
Vulpavus canavus Cope 1881 placental
Uintacyon asodes Gazin 1952 placental | |
Palaeosinopa veterrima Matthew 1901 eutherian | |
Esthonyx bisulcatus Cope 1874 tillodont | |
Prodiacodon tauricinerei Jepsen 1930 eutherian |