WW-75 (Eocene of the United States)

Where: Washakie County County, Wyoming (44.2° N, 107.9° W: paleocoordinates 48.7° N, 91.3° W)

• coordinate stated in text

When: Wa-0 mammal zone, Willwood Formation, Early/Lower Eocene (55.8 - 48.6 Ma)

• sandy mudstone and anthills; probably same cut as WW-71.

Environment/lithology: fine channel filllithified, sandy

• "sandy cut"

Primary reference: K. D. Rose, A. E. Chew, R. H. Dunn, M. J. Kraus, H. C. Fricke and S. P. Zack. 2012. Earliest Eocene mammalian fauna from the Paleocene-Eocene Thermal Maximum at Sand Creek Divide, southern Bighorn Basin, Wyoming. University of Michigan Papers on Paleontology 36:1-122 [J. Bloch/J. Bloch]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 154255: authorized by Jonathan Bloch, entered by Jonathan Bloch on 06.02.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Mammalia
 Cimolesta - Coryphodontidae
Coryphodon sp.
Coryphodon sp. Owen 1845 pantodont
 Condylarthra - Hyopsodontidae
Hyopsodus loomisi
Hyopsodus loomisi McKenna 1960 condylarth
 Primates - Omomyidae
Teilhardina brandti
Teilhardina brandti Gingerich 1993 tarsier
 Rodentia - Cylindrodontidae
Tuscahomys worlandensis, Tuscahomys cf. major
Tuscahomys worlandensis Rose et al. 2012 rodent
Tuscahomys cf. major Dawson and Beard 2007 rodent
 Ferae -
Miacis deutschi, Uintacyon gingerichi
Miacis deutschi Gingerich 1983 placental
"Cf. Miacis deutschi"
Uintacyon gingerichi Heinrich et al. 2008 placental
 Ferae - Viverravidae
Didymictis leptomylus
Didymictis leptomylus Cope 1880 placental
 Acreodi - Mesonychidae
Dissacus praenuntius
Dissacus praenuntius Matthew and Granger 1915 condylarth
 Tribosphenida - Phenacodontidae
Phenacodus vortmani, Phenacodus intermedius, Copecion davisi, Ectocion parvus
Phenacodus vortmani Cope 1880 condylarth
Phenacodus intermedius Granger 1915 condylarth
Copecion davisi Gingerich 1989 condylarth
Ectocion parvus Granger 1915 condylarth
 Perissodactyla - Equidae
"Hyracotherium sandrae" = Sifrhippus sandrae
"Hyracotherium sandrae" = Sifrhippus sandrae Gingerich 1989 horse
 Procreodi - Arctocyonidae
Chriacus badgleyi
Chriacus badgleyi Gingerich 1989 condylarth
 Artiodactyla - Diacodexeidae
Diacodexis ilicis
Diacodexis ilicis Gingerich 1989 even-toed ungulate
 Tribosphenida - Sespedectidae
cf. Colpocherus sp.
cf. Colpocherus sp. Beard and Dawson 2009 placental
"cf. Colpocherus sp., probably new"
 Taeniodonta - Stylinodontidae
Ectoganus bighornensis
Ectoganus bighornensis Schoch 1981 taeniodont