FG-18: Wasatchian, Wyoming

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Didelphodontine sp.
Clyde 1997 1 specimen
Reithroparamyine sp.
Clyde 1997 1 specimen
Reptilia - Anguidae
Paraglyptosaurus sp. Sullivan 1979
Clyde 1997
Reptilia
Allognathosuchus sp. Mook 1921
Clyde 1997
Ceratosuchus ? sp. Schmidt 1938
Clyde 1997
Mammalia - Nyctitheriidae
? Leptacodon sp. Matthew and Granger 1921
Clyde 1997 1 specimen
Mammalia - Pantolestidae
Palaeosinopa lutreola Matthew 1918
Clyde 1997 2 specimens
Mammalia - Acreodi
? Wyolestes apheles Gingerich 1981
Clyde 1997 1 specimen
Mammalia - Creodonta - Hyaenodontidae
Arfia shoshoniensis (Matthew and Granger 1915)
Clyde 1997 1 specimen
Prototomus martis Gingerich and Deutsch 1989
Clyde 1997 1 specimen
Mammalia
Miacis exiguus Matthew and Granger 1915
Clyde 1997 1 specimen
Uintacyon rudis Rose 1981
Clyde 1997 1 specimen
Mammalia - Viverravidae
Viverravus acutus Matthew and Granger 1915
Polly 1997 5 specimens
Viverravus rosei Polly 1997
Polly 1997 2 specimens
Mammalia - Diacodexeidae
Diacodexis metsiacus (Cope 1882)
Clyde 1997 15 specimens
Mammalia - Procreodi - Arctocyonidae
Thryptacodon antiquus Matthew and Granger 1915
Clyde 1997 3 specimens
Mammalia - Phenacodontidae
? Phenacodus sp. Cope 1873
Clyde 1997 1 specimen
Ectocion osbornianus (Cope 1882)
Clyde 1997 11 specimens
Mammalia - Perissodactyla - Equidae
Hyracotherium grangeri Gingerich 1989
Clyde 1997 34 specimens
recombined as Sifrhippus grangeri
Mammalia - Perissodactyla
Cardiolophus radinskyi Gingerich 1991
Clyde 1997 2 specimens
Mammalia - Rodentia - Ischyromyidae
Paramys sp. Leidy 1871
Clyde 1997 1 specimen
Acritoparamys atavus (Jepsen 1937)
Clyde 1997 2 specimens
Acritoparamys atwateri (Loomis 1907)
Clyde 1997 2 specimens
Mammalia - Primates - Paromomyidae
Phenacolemur praecox Matthew 1915
Clyde 1997 1 specimen
Phenacolemur simonsi Bown and Rose 1976
Clyde 1997 1 specimen
Ignacius graybullianus Bown and Rose 1976
Clyde 1997 6 specimens
Mammalia - Primates - Micromomyidae
Tinimomys graybullensis (Szalay 1974)
Clyde 1997 2 specimens
original and current combination Tinimomys graybulliensis
Mammalia - Primates - Notharctidae
Cantius mckennai (Gingerich and Simons 1977)
Clyde 1997 18 specimens
Mammalia - Primates - Microsyopidae
Niptomomys sp. McKenna 1960
Clyde 1997 1 specimen
Niptomomys doreenae McKenna 1960
Clyde 1997 14 specimens
Arctodontomys wilsoni (Szalay 1969)
Gunnell 1985 3 specimens
Mammalia - Primates - Omomyidae
Teilhardina americana Bown 1976
Clyde 1997 2 specimens
Mammalia - Condylarthra - Hyopsodontidae
Hyopsodus loomisi McKenna 1960
Clyde 1997 37 specimens
Mammalia - Macroscelidea - Apheliscidae
Apheliscus wapitiensis (Van Valen 1967)
Clyde 1997 1 specimen
Apheliscus chydaeus Gingerich 1994
Clyde 1997 7 specimens
Haplomylus speirianus (Cope 1880)
Clyde 1997 48 specimens
Mammalia - Apatemyidae
Labidolemur kayi Simpson 1929
Clyde 1997 1 specimen
Mammalia - Esthonychidae
Esthonyx spatularius Cope 1880
Clyde 1997 3 specimens
Mammalia - Coryphodontidae
Coryphodon eocaenus Owen 1846
Clyde 1997 1 specimen
Mammalia - Leptictidae
Prodiacodon tauricinerei (Jepsen 1930)
Clyde 1997 1 specimen
Palaeictops bicuspis (Cope 1880)
Clyde 1997 3 specimens
Mammalia
Peradectes chesteri (Gazin 1952)
Clyde 1997 3 specimens
Mammalia - Multituberculata - Neoplagiaulacidae
Parectypodus lunatus Krause 1982
4 specimens
Mammalia - Multituberculata - Eucosmodontidae
Neoliotomus ultimus (Granger and Simpson 1928)
3 specimens
original and current combination Eucosmodon ultimus
see common names

Geography
Country:United States State/province:Wyoming County:Big Horn
Coordinates: 44.6° North, 108.5° West (view map)
Paleocoordinates:49.4° North, 91.3° West
Basis of coordinate:estimated from map
Geographic resolution:small collection
Time
Period:Paleogene Epoch:Eocene
Stage:Ypresian 10 m.y. bin:Cenozoic 2
*Period:Tertiary
Key time interval:Wasatchian
Age range of interval:54.90000 - 50.50000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Willwood
Local section:Foster Gulch - Y U Bench Local bed:135
Local order:bottom to top
Regional section:Southeast Regional bed:1330
Regional order:bottom to top
Stratigraphic resolution:group of beds
Lithology and environment
Primary lithology: lithified "siliciclastic"
Includes fossils?Y
Environment:fluvial-lacustrine indet. Tectonic setting:intermontane basin
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Preservation of anatomical detail:good
Associated major elements:some
Disassociated major elements:many
Temporal resolution:time-averaged
Spatial resolution:parautochthonous
Collection methods and comments
Collection excludes:some genera
Collection methods:surface (float),surface (in situ),survey of museum collection
Reason for describing collection:taxonomic analysis
Museum repositories:UMMP
Taxonomic list comments:Zone Wa-2
Metadata
Database number:15586
Authorizer:J. Alroy, W. Clyde Enterer:J. Alroy, L. Gannon
Modifier:G. Varnham Research group:vertebrate
Created:1993-09-27 00:00:00 Last modified:2022-02-15 07:20:28
Access level:the public Released:1993-09-27 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:
2158. D. W. Krause. 1982. Multituberculates from the Wasatchian Land-Mammal Age, Early Eocene, of Western North America. Journal of Paleontology 56(2):271-294 [J. Alroy/J. Alroy/J. Ju]

Secondary references:

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]
1728 G. F. Gunnell. 1985. Systematics of Early Eocene Microsyopinae (Mammalia, Primates) in the Clark's Fork Basin, Wyoming. Contributions from the Museum of Paleontology, University of Michigan 27(2):51-71 [J. Alroy/J. Alroy/M. Uhen]
2787 P. D. Polly. 1997. Ancestry and Species Definition in Paleontology: A Stratocladistic Analysis of Paleocene-Eocene Viverravidae (Mammalia, Carnivora) from Wyoming. Contributions from the Museum of Paleontology, University of Michigan 30(1):1-53 [J. Alroy/J. Alroy/M. Uhen]