Croc Tooth Quarry: Late/Upper Paleocene, Wyoming

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Phenacodontidae
Ectocion cedrus Thewissen 1990
Thewissen 1990
Phenacodus grangeri Simpson 1935
Secord 2008
Phenacodus magnus Thewissen 1990
Secord 2008
Mammalia - Procreodi - Arctocyonidae
Thryptacodon australis Simpson 1935
Secord 2008
Arctocyon sp. Blainville 1841
Secord 2008
"Arctocyon small sp."
Arctocyon mumak (Van Valen 1978)
Secord 2008
synonym of Arctocyon acrogenius
Mimotricentes sp. Simpson 1937
Gingerich 1979
(1 measurement)
    = Lambertocyon eximius Gingerich 1979
Alroy 2002
replaces ID of Gingerich 1978
Mammalia - Viverravidae
? Raphictis sp. Gingerich and Winkler 1985
Secord 2008
Mammalia - Pantolestidae
cf. Bessoecetor septentrionalis (Russell 1929)
Secord 2008
Bessoecetor pilodontus Secord 2008
Secord 2008
Mammalia - Primates - Paromomyidae
Ignacius frugivorus Matthew and Granger 1921
Secord 2008
Phenacolemur archus Secord 2008
Secord 2008
Mammalia - Primates - Plesiadapidae
Plesiadapis churchilli Gingerich 1975
Gingerich 1976
Plesiadapis cf. fodinatus Jepsen 1930
Secord 2008
Chiromyoides caesor n. sp. Gingerich 1973
Gingerich 1973
Mammalia - Barylambdidae
Leptolambda churchilli (Gingerich and Childress 1983)
Secord 2008
Haplolambda cf. quinni Patterson 1939
Secord 2008
Mammalia
Titanoides gidleyi Jepsen 1930
Simons 1960
T. zeuxis said to also possibly be present, but these are considered conspecific by Gingerich 1996
Mammalia - Cyriacotheriidae
Cyriacotherium argyreum Rose and Krause 1982
Secord 2008
Mammalia - Multituberculata - Ptilodontidae
Ptilodus kummae Krause 1977
Gunnell 1994
Mammalia - Multituberculata - Neoplagiaulacidae
Neoplagiaulax mckennai Sloan 1987
Mammalia - Multituberculata - Eucosmodontidae
Eucosmodontidae indet. Jepsen 1940
Secord 2008
see common names

Geography
Country:United States State/province:Wyoming County:Big Horn
Coordinates: 44.7° North, 108.3° West (view map)
Paleocoordinates:50.1° North, 89.0° West
Basis of coordinate:estimated from map
Geographic resolution:small collection
Time
Period:Paleogene Epoch:Paleocene
Stage:Thanetian 10 m.y. bin:Cenozoic 1
*Period:Tertiary
Key time interval:Late/Upper Paleocene
Age range of interval:59.20000 - 56.00000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Fort Union
Local section:South Foster Gulch Local bed:95
Local order:bottom to top
Regional section:Southeast Regional bed:255
Regional order:bottom to top
Stratigraphic resolution:bed
Lithology and environment
Primary lithology:lenticular lithified "siliciclastic"
Includes fossils?Y
Environment:fluvial-lacustrine indet. Tectonic setting:intermontane basin
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Articulated whole bodies:none
Associated major elements:some
Disassociated major elements:many
Disassociated minor elements:many
Collection methods and comments
Collection excludes:some genera
Collection methods:bulk,selective quarrying,surface (float),surface (in situ)
Museum repositories:UMMP
Taxonomic list comments:said by Archibald et al. 1987 to be Ti4 but not in a measured sectionnot the same as the Witter locality in the Sentinel Butte Fm. of North Dakota (see)same level as Divide Quarry and "clearly overlying" Cedar Point and Jepsen Quarries: Gingerich 1976sec 5 T54N R95W
Metadata
Also known as:Crocodile Tooth Quarry; Witter Quarry; FG-28
Database number:15018
Authorizer:J. Alroy, P. Holroyd Enterer:J. Alroy, P. Holroyd
Modifier:W. Clyde Research group:vertebrate
Created:1994-04-30 00:00:00 Last modified:2005-01-03 13:42:13
Access level:the public Released:1994-04-30 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:
3196. R. E. Sloan. 1987. Paleocene and latest Cretaceous mammal ages, biozones, magnetozones, rates of sedimentation, and evolution. Geological Society of America Special Paper 209:165-200 [J. Alroy/J. Alroy/M. Uhen]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
11717 W. C. Clyde. 1997. Stratigraphy and mammalian paleontology of the McCullough Peaks, northern Bighorn Basin, Wyoming: Implications for biochronology, basin development, and community reorganization across the Paleocene-Eocene boundary. PhD Thesis, University of Michigan [W. Clyde/W. Clyde/J. Alroy]
1632 P. D. Gingerich. 1973. First record of the Palaeocene primate Chiromyoides from North America. Nature 244:517-518 [J. Alroy/J. Alroy/J. Alroy]
1635 P. D. Gingerich. 1976. Cranial Anatomy and Evolution of Early Tertiary Plesiadapidae (Mammalia, Primates). University of Michigan Papers on Paleontology 15:1-141 [J. Alroy/J. Alroy/P. Mannion]
1639 P. D. Gingerich. 1979. Lambertocyon eximius, a New Arctocyonid (Mammalia, Condylarthra) from the Late Paleocene of Western North America. Journal of Paleontology 53(3) [J. Alroy/J. Alroy/J. Ju]
1731 G. F. Gunnell. 1994. Paleocene mammals and faunal analysis of the Chappo Type Locality (Tiffanian), Green River Basin, Wyoming. Journal of Vertebrate Paleontology 14(1):81-104 [J. Alroy/J. Alroy/J. Alroy]
63104 R. Secord. 2008. The Tiffanian Land-Mammal Age (middle and late Paleocene) in the northern Bighorn Basin, Wyoming. University of Michigan Papers on Paleontology 35:1-192 [K. Beard/K. Beard]
3124 E. L. Simons. 1960. The Paleocene Pantodonta. Transactions of the American Philosophical Society, New Series 50(6):1-81 [J. Alroy/J. Alroy/M. Carrano]
3401 J. G. M. Thewissen. 1990. Evolution of Paleocene and Eocene Phenacodontidae (Mammalia, Condylarthra). University of Michigan Papers on Paleontology 29:1-107 [J. Alroy/J. Alroy/P. Mannion]