Split Rock (UCMP V-69192): Hemingfordian, Wyoming

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Pleurodonta indet.
Scarpetta 2021
Peridiomys sp. Matthew 1924
    = Mioheteromyinae indet.
Alroy 2002
Reptilia - Testudines - Testudinidae
Testudinidae indet. Batsch 1788
Munthe 1979
Reptilia - Anguidae
Gerrhonotus sp. Wiegmann 1828
Munthe 1979
Reptilia - Colubridae
Natricinae indet. Bonaparte 1838
Munthe 1979
Ameiseophis robinsoni Holman 1976
Munthe 1979
Pseudocemophora cf. antiqua
Munthe 1979
Reptilia - Boidae
Calamagras weigeli Holman 1972
Munthe 1979
Charina prebottae Brattstrom 1958
Munthe 1979
Reptilia - Loxocemidae
Ogmophis cf. miocompactus Holman 1976
Munthe 1979
Reptilia - Crotaphytidae
? Sceloporus sp. Wiegmann 1828
Munthe 1979
    = Crotaphytidae indet. Frost and Etheridge 1989
Scarpetta 2021
"Crotaphytidae incertae sedis Dentary morphotype 1"
Reptilia - Iguanidae
Phrynosoma ? douglassi
Munthe 1979
    = Phrynosomatinae indet. Frost and Etheridge 1989
Scarpetta 2021
Mammalia - Carnivora - Mustelidae
Mustelidae indet. Fischer 1817
cf. Leptarctus sp. Leidy 1856
Mammalia - Carnivora - Canidae
Tomarctus sp. Cope 1873
    = Borophaginae indet. Simpson 1945
Alroy 2002
Cynarctoides acridens (Barbour and Cook 1914)
no specimens specifically tied to this locality by Wang et al. 1999
Tomarctus kelloggi (Merriam 1911)
recombined as Paracynarctus kelloggi
confirmed by Wang et al. 1999
Tomarctus optatus Matthew 1924
recombined as Protomarctus optatus
confirmed by Wang et al. 1999
Mammalia - Perissodactyla - Equidae
Merychippus sp. Leidy 1856
    = Equinae indet. Steinmann and Döderlein 1890
Alroy 2002
Mammalia - Camelidae
Protolabis cf. heterodontus (Cope 1874)
Mammalia - Merycoidodontidae
Brachycrus rusticus (Leidy 1870)
Mammalia - Antilocapridae
Merycodus cf. sabulonis (Matthew and Cook 1909)
recombined as Cosoryx (Paracosoryx) sabulonis
Cosoryx (Paracosoryx) wilsoni Frick 1937
Mammalia - Palaeomerycidae
cf. Barbouromeryx sp. Frick 1937
Mammalia - Soricidae
Limnoecus sp. Stirton 1930
Mammalia - Talpidae
Scalopini indet. Dobson 1883
Mammalia - Proscalopidae
Mesoscalops scopelotemos Reed 1960
Mammalia - Erinaceidae
Parvericius montanus Koerner 1940
Brachyerix macrotis Matthew 1933
Mammalia - Rodentia - Sciuridae
Protospermophilus kelloggi Black 1963
Miospermophilus wyomingensis Black 1963
Mammalia - Rodentia
Proheteromys sp. Wood 1932
    = Geomyoidea indet. Bonaparte 1845
Alroy 2002
Mammalia - Rodentia - Heteromyidae
Harrymys woodi (Black 1961)
Harrymys irvini Munthe 1988
Schizodontomys harkseni (Macdonald 1970)
Perognathus sp. Maximillian 1839
    = Perognathinae indet. Coues 1875
Alroy 2002
Mammalia - Rodentia - Zapodidae
Plesiosminthus sabrae (Black 1958)
original and current combination Schaubeumys sabrae
Mammalia - Rodentia - Mylagaulidae
Mesogaulus novellus (Matthew 1924)
recombined as Galbreathia novellus
Mesogaulus vetus (Matthew 1924)
recombined as Alphagaulus vetus
confirmed by Korth 2000d
Mammalia - Lagomorpha - Ochotonidae
Oreolagus nebrascensis McGrew 1941
Mammalia - Lagomorpha - Leporidae
? Desmatolagus schizopetrus Dawson 1965
Hypolagus sp. Dice 1917
    = Archaeolaginae indet.
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:20.43000 - 15.97000 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:19075
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]
76463 S. G. Scarpetta. 2021. Iguanian lizards from the Split Rock Formation, Wyoming: exploring the modernization of the North American lizard fauna. Journal of Systematic Palaeontology 1-31 [P. Holroyd/P. Holroyd]