Where: Wyoming (44.6° N, 108.8° W: paleocoordinates 49.4° N, 91.6° W)
• coordinate estimated from map
• small collection-level geographic resolution
When: Willwood Formation, Wasatchian (55.8 - 50.3 Ma)
• Wa-4
• group of beds-level stratigraphic resolution
Environment/lithology: fluvial-lacustrine; lithified siliciclastic sediments
Size classes: macrofossils, mesofossils
Reposited in the UMMP
Collection methods: surface (float), surface (in situ),
Primary reference: W. C. Clyde. 1997. Stratigraphy and mammalian paleontology of the McCullough Peaks, northern Bighorn Basin, Wyoming: Implications for biochronology, basin development, and community reorganization across the Paleocene-Eocene boundary. PhD Thesis, University of Michigan [W. Clyde/W. Clyde/J. Alroy]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 46759: authorized by Will Clyde, entered by Will Clyde on 24.01.2005
Creative Commons license: CC BY (attribution)
Taxonomic list
Actinopteri | |
Lepisosteus sp. Agassiz 1843 gar | |
Mammalia | |
Hyopsodus latidens Denison 1937 condylarth | |
Paramys taurus Korth 1984 rodent | |
Cantius trigonodus Matthew 1915 primate
Cantius mckennai Gingerich and Simons 1977 primate | |
Homogalax protapirinus Wortman 1896 odd-toed ungulate | |
"Hyracotherium pernix" = Arenahippus pernix
"Hyracotherium pernix" = Arenahippus pernix Marsh 1876 horse | |
Ectocion osbornianus Cope 1882 condylarth
Phenacodus vortmani Cope 1880 condylarth | |
Diacodexis metsiacus Cope 1882 even-toed ungulate | |
Vassacyon promicrodon Wortman and Matthew 1899 placental
? Vulpavus australis Matthew and Granger 1915 placental | |
Didymictis protenus Cope 1874 placental | |
Pachyaena ossifraga Cope 1874 condylarth | |
Haplomylus scottianus Gingerich 1994 elephant shrew
Apheliscus insidiosus Cope 1874 elephant shrew | |
Coryphodon radians Cope 1872 pantodont | |
Esthonyx bisulcatus Cope 1874 tillodont | |
Aves | |
Aves indet. Linnaeus 1758 bird | |
Reptilia | |
Allognathosuchus sp. Mook 1921 crocodilian | |
Lacertilia indet. lizard | |
Gastropoda | |
Gastropoda indet. Cuvier 1795 snail |