Where: Wyoming (44.6° N, 108.4° W: paleocoordinates 49.4° N, 91.2° W)
• coordinate estimated from map
• small collection-level geographic resolution
When: Willwood Formation, Wasatchian (55.8 - 50.3 Ma)
• Wa-1
• 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 46662: authorized by Will Clyde, entered by Will Clyde on 24.01.2005
Creative Commons license: CC BY (attribution)
Taxonomic list
Mammalia | |
Acritoparamys atwateri Loomis 1907 rodent | |
Cantius ralstoni Matthew 1915 primate | |
"Hyracotherium grangeri" = Sifrhippus grangeri
"Hyracotherium grangeri" = Sifrhippus grangeri Gingerich 1989 horse | |
Ectocion osbornianus Cope 1882 condylarth | |
Thryptacodon antiquus Matthew and Granger 1915 condylarth | |
? Pachyaena sp. Cope 1874 condylarth
Dissacus longaevus condylarth | |
Pisces | |
"Pisces indet." = Osteichthyes
"Pisces indet." = Osteichthyes Huxley 1880 bony fish | |
Actinopteri | |
Amia sp. Linnaeus 1766 bowfin |