SC-435 Shell Bed (Paleocene of the United States)

Where: Wyoming (44.8° N, 108.9° W: paleocoordinates 50.3° N, 89.5° W)

When: Willwood Formation, Late/Upper Paleocene (58.7 - 55.8 Ma)

Environment/lithology: fluvial; lithified siliciclastic sediments

Reposited in the UMMP

Primary reference: P. D. Gingerich and T. Smith. 2006. Paleocene-Eocene land mammals from three new latest Clarkforkian and earliest Wasatchian wash sites at Polecat Bench in the northern Bighorn Basin, Wyoming. Contributions from the Museum of Paleontology, University of Michigan 31(11):245-303 [C. Beard/C. Beard]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 80579: authorized by K. Christopher Beard, entered by K. Christopher Beard on 28.04.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Primates - Microsyopidae
Niptomomys doreenae McKenna 1960 primate
 Primates - Paromomyidae
Phenacolemur praecox Matthew 1915 primate
 Rodentia - Ischyromyidae
Microparamys cheradius Ivy 1990 rodent
 Tribosphenida - Nyctitheriidae
Wyonycteris chalix Gingerich 1987 placental
"Leptacodon rosei" = Plagioctenodon rosei Gingerich 1987 placental
 Ferae - Viverravidae
Viverravus rosei Polly 1997 placental
 Ferae -
Uintacyon rudis Rose 1981 placental
 Macroscelidea - Apheliscidae
Aletodon gunnelli Gingerich 1977 elephant shrew
Haplomylus simpsoni Rose 1981 elephant shrew
Apheliscus nitidus Simpson 1937 elephant shrew
 Ungulata - Phenacodontidae
Ectocion osbornianus Cope 1882 condylarth
 Insectivora - Apatemyidae
Labidolemur kayi Simpson 1929 insectivoran
 Theriiformes - Peradectidae
Peradectes protinnominatus McKenna 1960 metatherian
 Multituberculata - Neoplagiaulacidae
Ectypodus powelli Jepsen 1940 multituberculate