Split Rock (UCMP V-69191): 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 - Iguanidae
Phrynosoma ? douglassi
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 - Boidae
Charina prebottae Brattstrom 1958
Munthe 1979
Reptilia - Loxocemidae
Ogmophis cf. miocompactus Holman 1976
Munthe 1979
Reptilia - Colubridae
Pseudocemophora cf. antiqua
Munthe 1979
Ameiseophis robinsoni Holman 1976
Munthe 1979
Natricinae indet. Bonaparte 1838
Munthe 1979
Reptilia - Anguidae
Gerrhonotus sp. Wiegmann 1828
Munthe 1979
Reptilia - Testudines - Testudinidae
Gopherus cf. edae (Hay 1906)
Munthe 1979
Mammalia - Rodentia
Proheteromys sp. Wood 1932
    = Geomyoidea indet. Bonaparte 1845
Alroy 2002
Mammalia - Rodentia - Heteromyidae
Harrymys irvini Munthe 1988
Perognathus sp. Maximillian 1839
    = Perognathinae indet. Coues 1875
Alroy 2002
Schizodontomys harkseni (Macdonald 1970)
Mammalia - Rodentia - Sciuridae
Miospermophilus wyomingensis Black 1963
Tamias sp. Illinger 1811
    = cf. Nototamias sp. Pratt and Morgan 1989
Sutton and Korth 1995
"may be" this genus; Lindsay 1972 considers this close to N. ateles, but Sutton 1972 compares it to the Thomas Farm form
Protospermophilus kelloggi Black 1963
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 - Leporidae
Leporidae indet. Fischer de Waldheim 1817
Hypolagus sp. Dice 1917
    = Archaeolaginae indet.
Alroy 2002
? Desmatolagus schizopetrus Dawson 1965
Mammalia - Lagomorpha - Ochotonidae
Oreolagus nebrascensis McGrew 1941
Mammalia - Carnivora - Canidae
Tomarctus sp. Cope 1873
    = Borophaginae indet. Simpson 1945
Alroy 2002
Cynarctoides acridens (Barbour and Cook 1914)
confirmed by Wang et al. 1999
Tomarctus kelloggi (Merriam 1911)
recombined as Paracynarctus kelloggi
confirmed by Wang et al. 1999
Mammalia - Carnivora - Procyonidae
? Procyonidae indet. Gray 1825
Mammalia - Carnivora - Mustelidae
Miomustela sp. Hall 1930
cf. Leptarctus sp. Leidy 1856
Mammalia - Camelidae
Camelidae indet. Gray 1821
Mammalia - Merycoidodontidae
Brachycrus vaughani Schultz and Falkenbach 1940
synonym of Brachycrus laticeps
Brachycrus rusticus (Leidy 1870)
Mammalia - Antilocapridae
Merycodus cf. sabulonis (Matthew and Cook 1909)
recombined as Cosoryx (Paracosoryx) sabulonis
Mammalia - Palaeomerycidae
cf. Barbouromeryx sp. Frick 1937
Mammalia - Perissodactyla - Chalicotheriidae
Tylocephalonyx skinneri Coombs 1979
Mammalia - Soricidae
Limnoecus sp. Stirton 1930
Mammalia - Proscalopidae
Mesoscalops scopelotemos Reed 1960
Mammalia - Erinaceidae
Brachyerix macrotis Matthew 1933
Parvericius montanus Koerner 1940
Mammalia - Chiroptera
Chiroptera indet. Blumenbach 1779
a bat
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, 104.6° 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
Primary lithology: not reported
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
Also known as:Second Bench
Database number:19074
Authorizer:J. Alroy, P. Holroyd Enterer:J. Alroy, P. Holroyd
Modifier:P. Holroyd Research group:vertebrate
Created:1993-09-27 00:00:00 Last modified:2024-04-06 17:23:02
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]
3342 J. F. Sutton and W. W. Korth. 1995. Rodents (Mammalia) from the Barstovian (Miocene) Anceney local fauna, Montana. Annals of Carnegie Museum 64(4):267-314 [J. Alroy/J. Alroy/M. Uhen]