Bozeman: Wasatchian, Wyoming

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia - Anguidae
Melanosaurus sp. Gilmore 1928
ElShafie 2024 1 specimen
Mammalia - Coryphodontidae
Coryphodon sp. (Owen 1845)
original and current combination Lophiodon (Coryphodon)
Mammalia - Macroscelidea - Amphilemuridae
Entomolestes nitens Matthew 1918
    = Macrocranion cf. nitens Matthew 1918
Alroy 2002
described by Krishtalka 1976a
Mammalia - Macroscelidea - Apheliscidae
Apheliscus nitidus Simpson 1937
    = Apheliscus sp. Cope 1875
Gingerich 1994
possibly A. chydaeus
Haplomylus bozemanensis n. sp. Robinson and Williams 1997
Robinson and Williams 1997
(1 measurement)
Mammalia - Condylarthra - Hyopsodontidae
Hyopsodus miticulus (Cope 1874)
    = Hyopsodus sp. Leidy 1870
Alroy 2002
Mammalia - Creodonta
Prolimnocyon atavus Matthew and Granger 1915
    = Prolimnocyon haematus Gingerich and Deutsch 1989
Gingerich and Deutsch 1989
Mammalia - Creodonta - Hyaenodontidae
Paeneprolimnocyon mordax (Matthew and Granger 1915)
    = Prototomus robustus Matthew and Granger 1915
Gingerich and Deutsch 1989
in part
Paeneprolimnocyon mordax (Matthew and Granger 1915)
    = Galecyon mordax Matthew and Granger 1915
Gingerich and Deutsch 1989
in part
Mammalia - Phenacodontidae
Phenacodus vortmani (Cope 1880)
Ectocion osbornianus (Cope 1882)
Mammalia - Perissodactyla - Equidae
Hyracotherium angustidens (Cope 1875)
    = Hyracotherium sp. Owen 1841
Alroy 2002
    = Arenahippus cf. grangeri Gingerich 1989
Froehlich 2002
recombined as Sifrhippus grangeri
Mammalia - Diacodexeidae
Diacodexis metsiacus (Cope 1882)
    = Diacodexis primus Krishtalka and Stucky 1985
Krishtalka and Stucky 1985
Mammalia - Nyctitheriidae
Leptacodon sp. Matthew and Granger 1921
    = Nyctitheriidae indet. Simpson 1928
Bown and Schankler 1982
Mammalia - Parapternodontidae
Koniaryctes paulus n. sp. Robinson and Kron 1998
Robinson and Kron 1998
(1 measurement)
Mammalia - Rodentia - Ischyromyidae
Paramys sp. Leidy 1871
medium sized
Mammalia - Primates - Micromomyidae
Tinimomys graybulliensis Szalay 1974
Robinson 1994
new UCM specimen (1 measurement)
Myrmekomomys loomisi n. sp. Robinson 1994
(1 measurement)
    = Tinimomys loomisi Robinson 1994
Robinson 1994
synonym of Tinimomys graybulliensis
new UCM specimen
Mammalia - Primates - Paromomyidae
Simpsonlemur sp. Robinson and Ivy 1994
Robinson and Ivy 1994
forms "B" and "C"
Phenacolemur praecox Matthew 1915
OK according to Robinson and Ivy 1994
Phenacolemur simonsi Bown and Rose 1976
Robinson and Ivy 1994
presumably includes second, smaller Phenacolemur sp.
Pulverflumen magnificum n. sp. Robinson and Ivy 1994
Robinson and Ivy 1994
Ignacius graybullianus Bown and Rose 1976
Robinson and Ivy 1994
Mammalia - Primates - Omomyidae
Tetonius homunculus (Cope 1882)
    = Tetonius sp. Matthew 1915
Alroy 2002
Mammalia - Primates - Microsyopidae
Haplomylus speirianus (Cope 1880)
recombined as Microsyops speirianus
confirmed by Robinson and Williams 1997 (6 measurements)
Microsyops wilsoni Szalay 1969
    = Arctodontomys wilsoni Szalay 1969
Alroy 2002
Mammalia - Primates - Notharctidae
Pelycodus mckennai Gingerich and Simons 1977
    = Cantius mckennai Gingerich and Simons 1977
Gingerich and Simons 1977
"P. ralstoni"
Mammalia - Multituberculata - Eucosmodontidae
Neoliotomus ultimus (Granger and Simpson 1928)
original and current combination Eucosmodon ultimus
see common names

Geography
Country:United States State/province:Wyoming County:Johnson
Coordinates: 44.0° North, 106.6° West (view map)
Paleocoordinates:48.5° North, 89.4° West
Basis of coordinate:based on political unit
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:55.80000 - 50.30000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:"Wasatch"
Local section:PwdrR Local bed:245
Local order:bottom to top
Lithology and environment
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Collection methods and comments
Collection size:59 specimens
Taxonomic list comments:245 meter level in Robinson and Ivy 1994 section
Metadata
Also known as:UCM 81003
Database number:15912
Authorizer:J. Alroy, P. Holroyd, J. Marcot Enterer:J. Alroy, P. Holroyd, J. Marcot
Research group:vertebrate
Created:1993-02-18 00:00:00 Last modified:2002-06-03 03:27:40
Access level:the public Released:1993-02-18 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:

1358. E. Delson. 1971. Fossil mammals of the early Wasatchian Powder River local fauna, Eocene of northeast. Bulletin of the American Museum of Natural History 146(4) [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]
1125 T. M. Bown and D. Schankler. 1982. A review of the Proteutheria and Insectivora of the Willwood Formation (Lower Eocene), Bighorn Basin, Wyoming. United States Geological Survey Bulletin 1523:1-79 [J. Alroy/J. Alroy/J. Ju]
87093 S. J. ElShafie. 2024. Body size estimation from isolated fossil bones reveals deep time evolutionary trends in North American lizards. PLoS ONE 19(1:e0296318):1-25 [P. Holroyd/P. Holroyd/P. Holroyd]
53105 D. J. Froehlich. 2002. Quo vadis Eohippus? The systematics and taxonomy of the early Eocene equids (Perissodactyla). Zoological Journal of the Linnean Society 134:141-256 [M. Carrano/M. Carrano/M. Carrano]
1662 P. D. Gingerich. 1994. New species of Apheliscus, Haplomylus, and Hyopsodus (Mammalia, Condylarthra) from the late Paleocene of southern Montana and early Eocene of northwestern Wyoming. Contributions from the Museum of Paleontology, University of Michigan 29(6):119-134 [J. Alroy/J. Alroy/K. Beard]
1666 P. D. Gingerich and H. A. Deutsch. 1989. Systematics and Evolution of Early Eocene Hyaenodontidae (Mammalia, Creodonta) in the Clarks Fork Basin, Wyoming. Contributions from the Museum of Paleontology, University of Michigan 27(13):327-391 [J. Alroy/J. Alroy/J. Marcot]
1675 P. D. Gingerich and E. L. Simons. 1977. Systematics, phylogeny, and evolution of early Eocene Adapidae (Mammalia, Primates) in North America. Contributions from the Museum of Paleontology, University of Michigan 24(22):245-279 [J. Alroy/J. Alroy/M. Uhen]
2183 L. Krishtalka and R. K. Stucky. 1985. Revision of the Eocene Wind River Faunas, Early Eocene of Central Wyoming. Part 7. Revision of Diacodexis (Mammalian, Artiodactyla). Annals of Carnegie Museum 54(14):413-486 [J. Alroy/J. Alroy/J. Marcot]
2926 P. Robinson. 1994. Myrmekomomys, a new genus of Micromomyine (Mammalia, ?Microsyopidae) from the lower Eocene rocks of the Powder River Basin, Wyoming. Contributions to Geology, University of Wyoming 30(1):85-90 [J. Alroy/J. Alroy/M. Uhen]
2927 P. Robinson and L. D. Ivy. 1994. Paromomyidae (?Dermoptera) from the Powder River Basin, Wyoming and a discussion of microevolution in closely related species. Contributions to Geology, University of Wyoming 30(1):91-116 [J. Alroy/J. Alroy/M. Uhen]
2928 P. Robinson and D. G. Kron. 1998. Koniaryctes, a new genus of apternodontid insectivore from lower Eocene rocks of the Powder River basin, Wyoming. Contributions to Geology, University of Wyoming 32(2):187-190 [J. Alroy/J. Alroy/J. Marcot]
2929 P. Robinson and B. A. Williams. 1997. Species diversity, tooth size, and shape of Haplomylus (Condylarthra, Hyopsodontidae) from the Powder River Basin, northeastern Wyoming. Contributions to Geology, University of Wyoming 31(2):59-78 [J. Alroy/J. Alroy/P. Holroyd]