PBDB Collection

SC-62 (Paleogene 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 (56.2 - 54.9 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 15119: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Will Clyde, Philip Mannion and Patricia Holroyd

Creative Commons license: CC BY (attribution)

Taxonomic list

• see note on p. 190
meter level given as 1380 by Gunnell and Gingerich 1991 and Bowen and Bloch 2002, but this is in conflict with fig. 3 of Rose, which indicates a level of 1340 m

Show authors, comments, and common names

Mammalia
Cimolesta -	"Esthonyx ancylion" = Azygonyx ancylion "Esthonyx ancylion" = Azygonyx ancylion Gingerich and Gunnell 1979 tillodont
Cimolesta - Cyriacotheriidae	Cyriacotherium psamminum Cyriacotherium psamminum Rose and Krause 1982 pantodont
Cimolesta - Coryphodontidae	Coryphodon sp. Coryphodon sp. Owen 1845 pantodont
Cimolesta - Apatemyidae	Labidolemur kayi¹² Labidolemur kayi¹² Simpson 1929 eutherian USNM 530208 (an associated rostrum and basicranium)
Primates - Carpolestidae	Carpolestes simpsoni⁴ Carpolestes simpsoni⁴ Bloch and Gingerich 1998 primate new specimens
Primates - Plesiadapidae	Plesiadapis cookei Plesiadapis cookei Jepsen 1930 primate
Primates - Paromomyidae	Ignacius graybullianus⁵, Ignacius clarkforkensis n. sp.⁶, Dillerlemur pagei¹, Acidomomys hebeticus n. gen. n. sp.³ Ignacius graybullianus⁵ Bown and Rose 1976 primate new specimen Ignacius clarkforkensis n. sp.⁶ Bloch et al. 2007 primate Dillerlemur pagei¹ Jepsen 1930 primate Acidomomys hebeticus n. gen. n. sp.³ Bloch et al. 2002 primate paromomyid
Soricomorpha - Nyctitheriidae	Ceutholestes dolosus¹¹, Plagioctenodon thewisseni⁹, "Leptacodon rosei" = Plagioctenodon rosei⁷ Ceutholestes dolosus¹¹ Rose and Gingerich 1987 placental Plagioctenodon thewisseni⁹ Manz and Bloch 2015 placental "Leptacodon rosei" = Plagioctenodon rosei⁷ Gingerich 1987 placental
Tribosphenida - Phenacodontidae	Phenacodus intermedius¹³, Ectocion osbornianus Phenacodus intermedius¹³ Granger 1915 condylarth Ectocion osbornianus Cope 1882 condylarth
Ferae - Viverravidae	Didymictis proteus¹⁰ Didymictis proteus¹⁰ Polly 1997 placental
Creodonta - Oxyaenidae	Dipsalodon matthewi⁸, Dipsalidictis sp.¹ Dipsalodon matthewi⁸ Jepsen 1930 creodont Dipsalidictis sp.¹ Matthew and Granger 1915 creodont
Reptilia
Crocodylia - Alligatoridae	Allognathosuchus wartheni² Allognathosuchus wartheni² Case 1925 crocodilian
Testudines - Pantrionychidae	Plastomenus sp.² Plastomenus sp.² Cope 1873 turtle
Testudines - Emydidae	Emydidae "indet. B"² Emydidae "indet. B"² Rafinesque 1815 turtle

¹Alroy 2002; ²Bartels 1983; ³Bloch et al. 2002; ⁴Bloch and Gingerich 1998; ⁵Bloch and Silcox 2001; ⁶Bloch et al. 2007; ⁷Gingerich 1987; ⁸Gunnell and Gingerich 1991; ⁹Manz and Bloch 2015; ¹⁰Polly 1997; ¹¹Rose and Gingerich 1987; ¹²Silcox et al. 2010; ¹³Thewissen 1990