Reculusa Blowout: Wasatchian, Wyoming

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia
Peratherium comstocki Cope 1884
    = Mimoperadectes sp. Bown and Rose 1979
Krishtalka and Stucky 1983
"M. labrus" of Bown and Rose 1979
Mammalia - Leptictidae
Palaeictops tauricinerei (Jepsen 1930)
    = Prodiacodon tauricinerei Jepsen 1930
Alroy 2002
Didelphodus absarokae (Cope 1881)
Mammalia - Coryphodontidae
Coryphodon sp. (Owen 1845)
original and current combination Lophiodon (Coryphodon)
Mammalia - Esthonychidae
Esthonyx bisulcatus Cope 1874
    = Esthonyx spatularius Cope 1880
Gingerich and Gunnell 1979
Mammalia - Condylarthra - Hyopsodontidae
Hyopsodus miticulus (Cope 1874)
    = Hyopsodus sp. Leidy 1870
Alroy 2002
Mammalia - Macroscelidea - Apheliscidae
Apheliscus nitidus Simpson 1937
    = Apheliscus sp. Cope 1875
Gingerich 1994
possibly A. chydaeus
Haplomylus bozemanensis Robinson and Williams 1997
Robinson and Williams 1997
Haplomylus speirianus (Cope 1880)
confirmed by Robinson and Williams 1997
Mammalia - Phenacodontidae
Ectocion osbornianus (Cope 1882)
Phenacodus brachypternus Cope 1882
    = Copecion brachypternus Cope 1882
Alroy 2002
Phenacodus primaevus (Cope 1873)
    = Phenacodus sp. Cope 1873
Alroy 2002
Phenacodus vortmani (Cope 1880)
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 - Perissodactyla
Homogalax protapirinus (Wortman 1896)
Mammalia - Diacodexeidae
Diacodexis metsiacus (Cope 1882)
    = Diacodexis primus Krishtalka and Stucky 1985
Krishtalka and Stucky 1985
Mammalia - Viverravidae
Didymictis protenus (Cope 1874)
    = Didymictis sp. Cope 1875
Alroy 2002
Mammalia - Creodonta
Prolimnocyon atavus Matthew and Granger 1915
    = Prolimnocyon haematus Gingerich and Deutsch 1989
Gingerich and Deutsch 1989
Mammalia - Creodonta - Hyaenodontidae
Arfia shoshoniensis (Matthew and Granger 1915)
    = Arfia zele Gingerich and Deutsch 1989
Gingerich and Deutsch 1989
Mammalia
Entomolestes cf. nitens Matthew 1918
(1 measurement)
    = Leipsanolestes siegfriedti Simpson 1928
Krishtalka 1976
Mammalia - Pantolestidae
Palaeosinopa sp. Matthew 1901
    = Pantolestidae indet. Cope 1884
Alroy 2002
Palaeosinopa didelphoides (Cope 1881)
    = Palaeosinopa sp. Matthew 1901
Bown and Schankler 1982
Palaeosinopa cf. lutreola Matthew 1918
Mammalia - Rodentia - Ischyromyidae
Paramys sp. Leidy 1871
small and medium sized species
Mammalia - Primates - Paromomyidae
Ignacius graybullianus Bown and Rose 1976
Robinson and Ivy 1994
Phenacolemur praecox Matthew 1915
    = Phenacolemur sp. Matthew 1915
Robinson and Ivy 1994
form "C"
Mammalia - Primates - Omomyidae
Tetonius homunculus (Cope 1882)
    = Tetonius sp. Matthew 1915
Alroy 2002
Mammalia - Primates - Notharctidae
Pelycodus mckennai Gingerich and Simons 1977
    = Cantius mckennai Gingerich and Simons 1977
Gingerich and Simons 1977
"P. ralstoni"; also listed by Maas and O'Leary 1996
Mammalia - Primates - Micromomyidae
Tinimomys graybulliensis Szalay 1974
Robinson 1994
new UCM specimen
Mammalia - Primates - Microsyopidae
Microsyops wilsoni Szalay 1969
    = Arctodontomys wilsoni Szalay 1969
Alroy 2002
Reptilia - Anguidae
Glyptosaurinae indet. Marsh 1872
Sullivan 1979 1 specimen
AMNH 3783, dentary fragment and osteoderm
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:54.90000 - 50.50000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:"Wasatch"
Local section:PwdrR Local bed:305
Local order:bottom to top
Lithology and environment
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Collection methods and comments
Collection size:225 specimens
Taxonomic list comments:305 m level in Robinson and Ivy 1994 section
Metadata
Also known as:UCM 81002
Database number:16055
Authorizer:J. Alroy, J. Marcot, P. Barrett Enterer:J. Alroy, T. Cleary, J. Marcot
Research group:vertebrate
Created:1995-01-05 00:00:00 Last modified:2002-06-03 03:27:41
Access level:the public Released:1995-01-05 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]
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]
1668 P. D. Gingerich and G. F. Gunnell. 1979. Systematics and Evolution of the Genus Esthonyx (Mammalia, Tillodontia) in the Early Eocene of North America. Contributions from the Museum of Paleontology, University of Michigan 25(7):125-153 [J. Alroy/J. Alroy/P. Mannion]
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]
2170 L. Krishtalka. 1976. Early Tertiary Adapisoricidae and Erinaceidae (Mammalia, Insectivora) of North America. Bulletin of Carnegie Museum of Natural History 1 [J. Alroy/J. Alroy/J. Ju]
2180 L. Krishtalka and R. K. Stucky. 1983. Revision of the Wind River faunas, early Eocene of central Wyoming. Part 3. Marsupialia. Annals of Carnegie Museum 52(9):205-227 [J. Alroy/J. Alroy/J. Alroy]
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]
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]
60385 R. M. Sullivan. 1979. Revision of the Paleogene genus Glyptosaurus (Reptilia, Anguidae). Bulletin of the American Museum of Natural History 163(1):1-72 [P. Barrett/T. Cleary]