Where: Wyoming (44.6° N, 108.8° W)
• Paleocoordinates: 52.4° N, 80.7° W (Wright 2013)
• coordinate estimated from map
• small collection-level geographic resolution
When: Willwood Formation, Wasatchian (55.8 - 50.3 Ma)
• Wa-6
• 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 46764: authorized by Will Clyde, entered by Will Clyde on 24.01.2005
Creative Commons license: CC0 (CC0)
Taxonomic list
Mammalia | |
Hyopsodus lysitensis Gingerich 1974 condylarth | |
Cardiolophus semihians Cope 1882 odd-toed ungulate | |
"Hyracotherium pernix" = Arenahippus pernix, "Hyracotherium cristatum" = Eohippus cristatus
"Hyracotherium pernix" = Arenahippus pernix Marsh 1876 horse
"Hyracotherium cristatum" = Eohippus cristatus Wortman 1896 horse | |
Reptilia | |
"Crocodilia indet." = Crocodylia
"Crocodilia indet." = Crocodylia Owen 1842 crocodilian |