PBDB Collection

WW-74 (Eocene of the United States)

Also known as Amy’s Hill

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)

• white sandy mudstone above and cutting into Purple 2; same cut as WW-71.

Environment/lithology: fine channel filllithified, sandy

• "sandy cut"

Collection methods: surface (float), sieve

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 154254: 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
Macroscelidea - Amphilemuridae	Macrocranion junnei Macrocranion junnei Smith et al. 2002 elephant shrew
Macroscelidea - Apheliscidae	Apheliscidae indet. Apheliscidae indet. Matthew 1918 elephant shrew "?APHELISCIDAE, probably new"…"30% smaller in linear dimensions than H. zalmouti (Gingerich and Smith, 2006)"
Condylarthra - Hyopsodontidae	Hyopsodus loomisi Hyopsodus loomisi McKenna 1960 condylarth
Primates - Omomyidae	Teilhardina brandti Teilhardina brandti Gingerich 1993 tarsier includes post crania
Primates - Microsyopidae	Niptomomys cf. doreenae, Nanomomys thermophilus Niptomomys cf. doreenae McKenna 1960 primate Nanomomys thermophilus Rose et al. 2012 primate type locality of Nanomomys thermophilus
Rodentia - Ischyromyidae	Paramys taurus Paramys taurus Korth 1984 rodent
Ferae - Metacheiromyidae	Palaeanodon nievelti Palaeanodon nievelti Gingerich 1989 placental
Creodonta - Hyaenodontidae	Arfia junnei Arfia junnei Gingerich 1989 creodont
Ferae -	Uintacyon gingerichi Uintacyon gingerichi Heinrich et al. 2008 placental
Ferae - Viverravidae	Viverravus acutus, Didymictis leptomylus Viverravus acutus Matthew and Granger 1915 placental Didymictis leptomylus Cope 1880 placental
Acreodi - Mesonychidae	Dissacus praenuntius Dissacus praenuntius Matthew and Granger 1915 condylarth
Tribosphenida - Phenacodontidae	Copecion davisi, Ectocion parvus 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
Tribosphenida - Sespedectidae	Colpocherus sp. Colpocherus sp. Beard and Dawson 2009 placental "cf. Colpocherus sp., probably new"
Tribosphenida - Pantolestoidae	Palaeosinopa lutreola Palaeosinopa lutreola Matthew 1918 placental
Soricomorpha - Nyctitheriidae	Leptacodon sp., Leptacodon donkroni, Plagioctenoides sp., Plagioctenoides microlestes, Plagioctenoides tombowni Leptacodon sp. Matthew and Granger 1921 placental "Leptacodon sp. 2, probably new" Leptacodon donkroni Rose et al. 2012 placental type locality of Leptacodon donkroni Plagioctenoides sp. Bown 1979 placental "Several isolated teeth and fragmentary jaws are of appropriate size and morphology to belong to Plagioctenoides and must represent either P. microlestes or P. tombowni, but in the absence of direct association with P4 they cannot be confidently assigned to species until differences between P. microlestes and P. tombowni are better understood." Plagioctenoides microlestes Bown 1979 placental Plagioctenoides tombowni Rose et al. 2012 placental type locality of Plagioctenoides tombowni
Soricomorpha - Parapternodontidae	Parapternodus sp. Parapternodus sp. Bown and Schankler 1982 placental "teeth belong to a species different from Parapternodus antiquus. They might represent a new species, or could belong to the early Wasatchian parapternodontid Koniaryctes paulus Robinson and Kron, 1998, which was described from the Powder River Basin."
Taeniodonta - Stylinodontidae	Ectoganus bighornensis Ectoganus bighornensis Schoch 1981 taeniodont
Tribosphenida - Marsupialia	Marsupialia indet. Marsupialia indet. marsupial Two left calcanei...belong to very small marsupials and perhaps represent Peradectes and Herpetotherium
Tribosphenida - Herpetotheriidae	Herpetotherium innominatum Herpetotherium innominatum Simpson 1928 marsupial
Tribosphenida - Peradectidae	Mimoperadectes labrus, Peradectes protinnominatus Mimoperadectes labrus Bown and Rose 1979 marsupial Peradectes protinnominatus McKenna 1960 marsupial "Cf. Peradectes protinnominatus"
Multituberculata - Neoplagiaulacidae	Ectypodus tardus Ectypodus tardus Jepsen 1940 multituberculate