Also known as USGS D-1162, YPM 40
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: T. M. Bown, K. D. Rose, E. L. Simons and S. L. Wing. 1994. Distribution and stratigraphic correlation of upper Paleocene and lower Eocene fossil mammal and plant localities of the Fort Union, Willwood, and Tatman formations, southern Bighorn Basin, Wyoming. United States Geological Survey Professional Paper 1540:1-103 [J. Alroy/J. Alroy/M. Uhen]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 15552: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Patricia Holroyd
Creative Commons license: CC BY (attribution)
Taxonomic list
level given as 560 m by Bown and Rose 1987, correctly using Schankler meter level, but incorrectly as 481 m by Bown et al.
Reptilia | |
Baltemys staurogastros n. gen. n. sp.2
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Mammalia | |
Macrocranion nitens Matthew 1918 elephant shrew | |
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Hyopsodus cf. minor Loomis 1905 condylarth | |
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Microsyops latidens Cope 1882 primate | |
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Cantius abditus Gingerich and Simons 1977 primate
cf. Copelemur sp. Gingerich and Simons 1977 primate | |
cf. Paramys sp. Leidy 1871 rodent | |
Palaeosinopa veterrima Matthew 1901 placental | |
Viverravus cf. acutus Matthew and Granger 1915 placental
Didymictis sp. Cope 1875 placental | |
Vulpavus sp. Marsh 1871 placental
Miacis cf. exiguus Matthew and Granger 1915 placental | |
Palaeanodon ignavus Matthew 1918 placental | |
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Prototomus sp. Cope 1874 creodont | |
Prolimnocyon sp. Matthew and Granger 1915 creodont | |
Bunophorus sp. Sinclair 1914 even-toed ungulate
Diacodexis metsiacus Cope 1882 even-toed ungulate | |
Anacodon ursidens Cope 1882 condylarth | |
Phenacodus vortmani Cope 1880 condylarth | |
Hyracotherium sp. Owen 1841 odd-toed ungulate | |
Heptodon calciculus Cope 1880 odd-toed ungulate | |
| |
Esthonyx bisulcatus Cope 1874 tillodont | |
Apatemys rodens Troxell 1923 eutherian | |
Coryphodon sp. Owen 1845 pantodont | |
Didelphodus absarokae Cope 1881 eutherian |