Split Rock (UCMP V-69192): Hemingfordian, Wyoming
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Mammalia
- Lagomorpha
- Leporidae
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? Desmatolagus schizopetrus
Dawson 1965
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Hypolagus sp.
Dice 1917
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= Archaeolaginae indet.
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Alroy 2002 | |||||||||
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Mammalia
- Lagomorpha
- Ochotonidae
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Oreolagus nebrascensis
McGrew 1941
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Mammalia
- Rodentia
- Zapodidae
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Plesiosminthus sabrae
(Black 1958)
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Mammalia
- Rodentia
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Proheteromys sp.
Wood 1932
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= Geomyoidea indet.
Bonaparte 1845
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Alroy 2002 | |||||||||
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unclassified
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Peridiomys sp.
Matthew 1924
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= Mioheteromyinae indet.
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Alroy 2002 | |||||||||
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Mammalia
- Rodentia
- Heteromyidae
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Schizodontomys harkseni
(Macdonald 1970)
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Harrymys irvini
Munthe 1988
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Harrymys woodi
(Black 1961)
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Perognathus sp.
Maximillian 1839
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= Perognathinae indet.
Coues 1875
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Alroy 2002 | |||||||||
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Mammalia
- Rodentia
- Mylagaulidae
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Mesogaulus vetus
(Matthew 1924)
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| confirmed by Korth 2000d | ||||||||||
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Mesogaulus novellus
(Matthew 1924)
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Mammalia
- Rodentia
- Sciuridae
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Protospermophilus kelloggi
Black 1963
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Miospermophilus wyomingensis
Black 1963
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Mammalia
- Merycoidodontidae
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Brachycrus rusticus
(Leidy 1870)
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Mammalia
- Camelidae
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Protolabis cf. heterodontus
(Cope 1874)
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Mammalia
- Dromomerycidae
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cf. Barbouromeryx sp.
Frick 1937
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Mammalia
- Antilocapridae
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Merycodus cf. sabulonis
(Matthew and Cook 1909)
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Cosoryx (Paracosoryx) wilsoni
Frick 1937
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Mammalia
- Perissodactyla
- Equidae
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Merychippus sp.
Leidy 1856
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= Equinae indet.
Steinmann and Döderlein 1890
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Alroy 2002 | |||||||||
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Mammalia
- Carnivora
- Canidae
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Tomarctus sp.
Cope 1873
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= Borophaginae indet.
Simpson 1945
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Alroy 2002 | |||||||||
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Tomarctus optatus
Matthew 1924
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| confirmed by Wang et al. 1999 | ||||||||||
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Tomarctus kelloggi
(Merriam 1911)
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| confirmed by Wang et al. 1999 | ||||||||||
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Cynarctoides acridens
(Barbour and Cook 1914)
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| no specimens specifically tied to this locality by Wang et al. 1999 | ||||||||||
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Mammalia
- Carnivora
- Mustelidae
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Mustelidae indet.
Fischer 1817
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cf. Leptarctus sp.
Leidy 1856
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Mammalia
- Talpidae
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Scalopini indet.
Dobson 1883
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Mammalia
- Proscalopidae
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Mesoscalops scopelotemos
Reed 1960
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Mammalia
- Soricidae
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Limnoecus sp.
Stirton 1930
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Mammalia
- Erinaceidae
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Brachyerix macrotis
Matthew 1933
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Parvericius montanus
Koerner 1940
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Reptilia
- Loxocemidae
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Ogmophis cf. miocompactus
Holman 1976
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Munthe 1979 | |||||||||
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Reptilia
- Boidae
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Calamagras weigeli
Holman 1972
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Munthe 1979 | |||||||||
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unclassified
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Pleurodonta indet.
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Scarpetta 2021 | |||||||||
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Reptilia
- Boidae
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Charina prebottae
Brattstrom 1958
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Munthe 1979 | |||||||||
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Reptilia
- Colubridae
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Ameiseophis robinsoni
Holman 1976
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Munthe 1979 | |||||||||
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Pseudocemophora cf. antiqua
Auffenberg 1963
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Munthe 1979 | |||||||||
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Natricinae indet.
Bonaparte 1838
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Munthe 1979 | |||||||||
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Reptilia
- Anguidae
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Gerrhonotus sp.
Wiegmann 1828
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Munthe 1979 | |||||||||
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Reptilia
- Iguanidae
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Phrynosoma ? douglassi
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Munthe 1979 | |||||||||
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= Phrynosomatinae indet.
Frost and Etheridge 1989
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Scarpetta 2021 | |||||||||
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Reptilia
- Crotaphytidae
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? Sceloporus sp.
Wiegmann 1828
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Munthe 1979 | |||||||||
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= Crotaphytidae indet.
Frost and Etheridge 1989
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Scarpetta 2021 | |||||||||
| "Crotaphytidae incertae sedis Dentary morphotype 1" | ||||||||||
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Reptilia
- Testudines
- Testudinidae
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Testudinidae indet.
Batsch 1788
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Munthe 1979 | |||||||||
| 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: | 18.5 - 16.3 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: | First Bench | ||
| Database number: | 19075 | ||
| 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 17:38:34 |
| Access level: | the public | Released: | 1993-09-27 00:00:00 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 2634. | 5% 16780 | J. 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] |