SC-74 (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: 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 15126: authorized by John Alroy, entered by John Alroy on 18.02.1993

Creative Commons license: CC BY (attribution)

Taxonomic list

• Chron 24R: Butler et al. 1981
level estimated at 1140 m based on fig. 3, but given as 1160 m by Butler et al. and 1150 m by Gingerich and Gunnell 1979, Gunnell and Gingerich 1991
 Primates - Microsyopidae
Arctodontomys simplicidens3 Rose 1981 primate
Arctodontomys simplicidens1 Rose 1981 primate
 Primates - Plesiadapidae
Plesiadapis cookei Jepsen 1930 primate
 Primates - Paromomyidae
Dillerlemur pagei1 Jepsen 1930 primate
 Glires -
 Creodonta - Oxyaenidae
Dipsalidictis aequidens4 Matthew and Granger 1915 creodont
cf. Dipsalodon sp. Jepsen 1930 creodont
Dipsalodon matthewi Jepsen 1930 creodont
Tytthaena lichna1 Rose 1981 creodont
 Ferae - Viverravidae
Didymictis proteus5 Polly 1997 placental
 Macroscelidea - Apheliscidae
Aletodon gunnelli Gingerich 1977 elephant shrew
Apheliscus nitidus Simpson 1937 elephant shrew
 Trogontia -
"Esthonyx xenicus n. sp." = Azygonyx xenicus
"Esthonyx xenicus n. sp." = Azygonyx xenicus Gingerich and Gunnell 1979 tillodont
see Gingerich and Gunnell 1979
 Tribosphenida - Arctocyonidae
Princetonia yalensis2 Gingerich 1989 condylarth
 Ungulata - Prodinoceratidae
Probathyopsis praecursor Simpson 1929 uintathere
 Ungulata - Phenacodontidae
Ectocion osbornianus Cope 1882 condylarth
Phenacodus intermedius6 Granger 1915 condylarth
 Acreodi - Mesonychidae
Dissacus praenuntius Matthew and Granger 1915 condylarth