Chalk Cliffs South: early Late Barstovian, Montana
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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Peridiomys sp.
Matthew 1924
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| also "Diprionomys sp." | ||||||||||
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= Mioheteromyinae indet.
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Alroy 2002 | |||||||||
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Mammalia
- Rodentia
- Cricetidae
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Copemys sp.
Wood 1936
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Mammalia
- Rodentia
- Zapodidae
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Schaubeumys sp.
Wood 1935
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= Zapodidae indet.
Coues 1875
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Alroy 2002 | |||||||||
| could be Plesiosminthus clivosus | ||||||||||
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Mammalia
- Rodentia
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Mookomys sp.
Wood 1931
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= Geomyoidea indet.
Bonaparte 1845
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Barnosky and Labar 1989 | |||||||||
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Proheteromys sp.
Wood 1932
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= Geomyoidea indet.
Bonaparte 1845
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Barnosky and Labar 1989 | |||||||||
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Mammalia
- Rodentia
- Geomyidae
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Mojavemys sp.
Lindsay 1972
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Mammalia
- Rodentia
- Heteromyidae
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Lignimus sp.
Storer 1970
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| probably OK | ||||||||||
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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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Cupidinimus sp.
Wood 1935
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| possibly two species: Carrasco 1998 | ||||||||||
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Mammalia
- Rodentia
- Eomyidae
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Pseudadjidaumo sp.
Lindsay 1972
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= Leptodontomys sp.
Shotwell 1956
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Alroy 2002 | |||||||||
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Pseudotheridomys sp.
Schlosser 1926
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Mammalia
- Rodentia
- Aplodontidae
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Tardontia sp.
Shotwell 1958
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Ansomys hepburnensis n. sp.
Hopkins 2004
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Hopkins 2004 | |||||||||
| (7 measurements) | ||||||||||
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Mammalia
- Rodentia
- Sciuridae
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Tamias sp.
Illinger 1811
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= Tamiini indet.
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Alroy 2002 | |||||||||
| synonym of Marmotini | ||||||||||
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Spermophilus sp.
Cuvier 1825
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Petauristodon sp.
Engesser 1979
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Mammalia
- Rodentia
- Mylagaulidae
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Mesogaulus sp.
Riggs 1899
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= Mylagaulidae indet.
Cope 1881
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Alroy 2002 | |||||||||
| might include type of "Mylagaulus" (= Alphagaulus) douglassi of McKenna 1955 from UCMP V-5060, which was found along with a camelid, "Parahippus cf. brevidens", and a merychippine | ||||||||||
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Mammalia
- Lagomorpha
- Ochotonidae
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Oreolagus sp.
Dice 1917
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Mammalia
- Lagomorpha
- Leporidae
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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
- 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 | |||||||||
| "Chalk Cliffs South, Unit 16 microfossil quarry" | ||||||||||
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Mammalia
- Proscalopidae
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Mesoscalops sp.
Reed 1960
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Montana | County: | Park |
| Coordinates: | 45.8° North, 110.5° West (view map) | ||||
| Paleocoordinates: | 46.5° North, 107.2° West | ||||
| Basis of coordinate: | based on political unit |
Time
| Period: | Neogene | Epoch: | Miocene |
| 10 m.y. bin: | Cenozoic 5 | ||
| *Period: | Tertiary | ||
| Key time interval: | early Late Barstovian | ||
| Age range of interval: | 16.30000 - 12.50000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Hepburn's Mesa | Member: | Unit 16 |
| Local section: | HepbM | Local bed: | 3 |
| Local order: | bottom to top |
Lithology and environment
| Environment: | terrestrial indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | mesofossils |
Collection methods and comments
| Reason for describing collection: | biostratigraphic analysis |
| Museum repositories: | CM |
| Taxonomic list comments:single locality near base of section | |
Metadata
| Also known as: | CM Locality #1935, Unit 16 microfossil quarry | ||
| Database number: | 18848 | ||
| Authorizer: | J. Alroy | Enterer: | J. Alroy |
| Modifier: | J. Alroy | Research group: | vertebrate |
| Created: | 1993-02-18 00:00:00 | Last modified: | 2007-09-25 20:36:28 |
| Access level: | the public | Released: | 1993-02-18 00:00:00 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 1152. | D. W. Burbank and A. D. Barnosky. 1990. The magnetochronology of Barstovian mammals in southwestern Montana and implications for the initiation of Neogene crustal extension in the northern Rocky Mountains. Geological Society America Bulletin 102 [J. Alroy/J. Alroy/J. Ju] |
Secondary references:
| 6294 | J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari] | |
| 6203 | A. D. Barnosky and W. J. Labar. 1989. Mid-Miocene (Barstovian) environmental and tectonic setting near Yellowstone Park, Wyoming and Montana. Geological Society America Bulletin 101(11):1448-1456 [J. Alroy/J. Alroy/J. Alroy] | |
| 11140 | S. B. Hopkins. 2004. Phylogeny and biogeography of the genus Ansomys Qiu, 1987 (Mammalia: Rodentia: Aplodontidae) and description of a new species from the Barstovian (mid-Miocene) of Montana. Journal of Paleontology 78(4):731-740 [J. Alroy/J. Alroy/J. Alroy] |