SC-159 (Paleocene of the United States)

Where: Park County, Wyoming (44.3° N, 109.0° W: paleocoordinates 49.7° N, 90.3° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Willwood Formation, Clarkforkian (56.8 - 55.8 Ma)

Environment/lithology: terrestrial

Reposited in the UMMP

Primary reference: K. D. Rose. 1981. The Clarkforkian Land-Mammal Age and Mammalian Faunal Composition Across the Paleocene-Eocene Boundary. University of Michigan Papers on Paleontology 26:1-197 [J. Alroy/J. Alroy/P. Mannion]more details

PaleoDB collection 15171: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Will Clyde

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Testudines - Trionychidae
Trionychidae indet.2 Gray 1825 softshell turtle
 Testudines - Panemydidae
Emydidae "indet. B"2 Rafinesque 1815 turtle
 Crocodylia - Alligatoridae
Ceratosuchus burdoshi3 Schmidt 1938 crocodilian
 Squamata - Anguidae
Melanosaurus maximus2 Gilmore 1928 lizard
Mammalia
 Cimolesta - Cyriacotheriidae
Cyriacotherium psamminum n. sp. Rose and Krause 1982 pantodont
see Rose and Krause 1982
 Cimolesta -
"Esthonyx grangeri" = Azygonyx grangeri
"Esthonyx grangeri" = Azygonyx grangeri Simpson 1937 tillodont
 Primates - Microsyopidae
Microsyopidae indet.1 Osborn and Wortman 1892 primate
Arctodontomys wilsoni4 Szalay 1969 primate
 Primates - Paromomyidae
Phenacolemur praecox Matthew 1915 primate
 Glires -
Rodentia indet.1 Savage 1951 rodent
 Amblypoda - Prodinoceratidae
Probathyopsis praecursor Simpson 1929 uintathere
 Tribosphenida - Phenacodontidae
Ectocion osbornianus Cope 1882 condylarth
Phenacodus intermedius5 Granger 1915 condylarth
 Ferae - Viverravidae
Didymictis protenus Cope 1874 placental
 Macroscelidea - Apheliscidae
Haplomylus simpsoni Rose 1981 elephant shrew
 Tribosphenida - Arctocyonidae
Thryptacodon cf. antiquus Matthew and Granger 1915 condylarth