Split Rock (UCMP V-77146): Hemingfordian, Wyoming

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Peridiomys sp. Matthew 1924
    = Mioheteromyinae indet.
Alroy 2002
Reptilia - Colubridae
Ameiseophis robinsoni Holman 1976
Munthe 1979
Reptilia - Anguidae
Gerrhonotus sp. Wiegmann 1828
Munthe 1979
Mammalia - Carnivora - Canidae
Tomarctus sp. Cope 1873
    = Borophaginae indet. Simpson 1945
Alroy 2002
Mammalia - Perissodactyla - Equidae
Merychippus sp. Leidy 1856
    = Equinae indet. Steinmann and Döderlein 1890
Alroy 2002
Mammalia - Perissodactyla - Chalicotheriidae
Tylocephalonyx skinneri Coombs 1979
Mammalia - Merycoidodontidae
Brachycrus sp. (Matthew 1901)
invalid subgroup of Merycochoerus
Mammalia - Camelidae
Protolabis cf. heterodontus (Cope 1874)
Mammalia - Antilocapridae
Cosoryx (Paracosoryx) wilsoni Frick 1937
    = Paracosoryx wilsoni Frick 1937
Alroy 2002
original and current combination Cosoryx (Paracosoryx) wilsoni
Merycodus cf. sabulonis (Matthew and Cook 1909)
recombined as Cosoryx (Paracosoryx) sabulonis
Mammalia - Proscalopidae
Mesoscalops scopelotemos Reed 1960
Mammalia - Erinaceidae
Brachyerix macrotis Matthew 1933
Mammalia - Lagomorpha - Ochotonidae
Oreolagus nebrascensis McGrew 1941
Mammalia - Lagomorpha - Leporidae
Hypolagus sp. Dice 1917
    = Archaeolaginae indet.
Alroy 2002
Mammalia - Rodentia - Mylagaulidae
Mesogaulus novellus (Matthew 1924)
    = Galbreathia novellus Matthew 1924
Alroy 2002
Mammalia - Rodentia - Sciuridae
Miospermophilus wyomingensis Black 1963
Protospermophilus kelloggi Black 1963
Mammalia - Rodentia
Proheteromys sp. Wood 1932
    = Geomyoidea indet. Bonaparte 1845
Alroy 2002
see common names

Geography
Country:United States State/province:Wyoming County:Fremont
Coordinates: 43.2° North, 108.2° West (view map)
Paleocoordinates:44.0° North, 104.3° West
Basis of coordinate:based on political unit
Geographic resolution:small collection
Time
Period:Neogene Epoch:Miocene
Stage:Burdigalian 10 m.y. bin:Cenozoic 5
*Period:Late/Upper Tertiary *Local age/stage:Hemingfordian
Key time interval:Hemingfordian
Age range of interval:18.50000 - 16.30000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Arikaree
Lithology and environment
Environment:eolian indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:taxonomic analysis
Museum repositories:UCMP
Metadata
Database number:19078
Authorizer:J. Alroy, P. Holroyd Enterer:J. Alroy, P. Holroyd
Research group:vertebrate
Created:1993-09-27 00:00:00 Last modified:2002-09-23 23:00:47
Access level:the public Released:1993-09-27 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:
2634.5% 16780J. Munthe. 1988. Miocene mammals of the Split Rock area, Granite Mountains basin, central Wyoming. University of California Publications in Geological Sciences 126:1-136 [J. Alroy/J. Alroy/J. Alroy]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
64367 J. Munthe. 1979. Summary of Miocene vertebrate fossils of the Granite Mountains Basin, central Wyoming. Contributions to Geology, University of Wyoming 18(1):33-46 [P. Holroyd/P. Holroyd]