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 46760: authorized by Will Clyde, entered by Will Clyde on 24.01.2005
Creative Commons license: CC BY (attribution)
Taxonomic list
Mammalia | |
Paramys copei Loomis 1907 rodent
Paramys ? delicatus Leidy 1871 rodent | |
Cantius trigonodus Matthew 1915 primate | |
Plagiomene multicuspis Matthew 1918 colugo | |
"Hyracotherium cristatum" = Systemodon tapirinus, Homogalax protapirinus
"Hyracotherium cristatum" = Systemodon tapirinus Cope 1875 odd-toed ungulate
Homogalax protapirinus Wortman 1896 odd-toed ungulate | |
"Hyracotherium pernix" = Arenahippus pernix
"Hyracotherium pernix" = Arenahippus pernix Marsh 1876 horse | |
Phenacodus trilobatus Cope 1881 condylarth | |
Diacodexis metsiacus Cope 1882 even-toed ungulate | |
Prototomus robustus Matthew and Granger 1915 creodont | |
Didymictis protenus Cope 1874 placental
Viverravus rosei Polly 1997 placental | |
Vassacyon promicrodon, "Miacis winkleri" = Gracilocyon winkleri
Vassacyon promicrodon Wortman and Matthew 1899 placental
"Miacis winkleri" = Gracilocyon winkleri Gingerich 1983 placental | |
Palaeanodon ignavus Matthew 1918 placental | |
Hyopsodus latidens Denison 1937 condylarth | |
Apheliscus insidiosus Cope 1874 elephant shrew | |
Coryphodon sp. Owen 1845 pantodont | |
Esthonyx bisulcatus Cope 1874 tillodont | |
Reptilia | |
Allognathosuchus sp. Mook 1921 crocodilian |