Also known as YPM 220, 221, 230a, 230b, 234, 235, USGS D-1398 (438 m), 1428 (440 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
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 15541: authorized by John Alroy, entered by John Alroy on 18.02.1993
Creative Commons license: CC BY (attribution)
Taxonomic list
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Vulpavus australis Matthew and Granger 1915 placental | |
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Phenacodus vortmani Cope 1880 condylarth | |
"Hyracotherium aemulor" = Arenahippus aemulor, "Hyracotherium grangeri" = Sifrhippus grangeri
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Esthonyx bisulcatus Cope 1874 tillodont |