Where: Wyoming (44.7° N, 108.8° W: paleocoordinates 49.5° N, 91.6° W)
• coordinate estimated from map
• small collection-level geographic resolution
When: Willwood Formation, Wasatchian (55.8 - 50.3 Ma)
• Wa-2
• 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 46786: authorized by Will Clyde, entered by Will Clyde on 24.01.2005
Creative Commons license: CC BY (attribution)
Taxonomic list
Reptilia | |
"Crocodilia indet." = Crocodylia
"Crocodilia indet." = Crocodylia Owen 1842 crocodilian | |
Lacertilia indet. lizard | |
Testudines indet. Batsch 1788 turtle | |
Mammalia | |
Coryphodon eocaenus Owen 1846 pantodont | |
Esthonyx spatularius Cope 1880 tillodont | |
Haplomylus speirianus Cope 1880 elephant shrew | |
Hyopsodus loomisi McKenna 1960 condylarth | |
Oxyaena gulo Matthew and Granger 1915 creodont
Dipsalidictis transiens Matthew and Granger 1915 creodont
Palaeonictis occidentalis Osborn 1892 creodont | |
Viverravus politus Matthew and Granger 1915 placental
Viverravus acutus Matthew and Granger 1915 placental | |
"Hyracotherium grangeri" = Sifrhippus grangeri
"Hyracotherium grangeri" = Sifrhippus grangeri Gingerich 1989 horse | |
Homogalax protapirinus Wortman 1896 odd-toed ungulate | |
Ectocion osbornianus Cope 1882 condylarth | |
Diacodexis metsiacus Cope 1882 even-toed ungulate | |
Thryptacodon antiquus Matthew and Granger 1915 condylarth | |
Rodentia indet. Bowdich 1821 rodent | |
Actinopteri | |
Lepisosteus sp. Agassiz 1843 gar |