Cedar Mountain (Miocene of the United States)
Where: Esmeralda and Mineral County, Nevada (38.3° N, 117.9° W: paleocoordinates 38.9° N, 115.5° W)
• coordinate based on political unit
When: Esmeralda Formation, Clarendonian (12.5 - 9.4 Ma)
Environment/lithology: terrestrial; lithology not reported
Primary reference: J. R. Firby. 1966. New non-marine Mollusca from the Esmeralda Formation, Nevada. Proceedings of the California Academy of Sciences 33(14):453-480 [J. Alroy/J. Alroy/J. Marcot]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 18845: authorized by John Alroy, entered by John Alroy on 27.09.1993, edited by Jonathan Marcot
Creative Commons license: CC BY (attribution)
Taxonomic list
• probably not faunally mixed, although list of Merriam 1916a probably is as it includes Stewart Spring
probably includes Tedford Pocket (UCMP V-1984), dated by Evernden et al. 1964 as follows: KA 452 - 10.7 (= 10.98) Ma, biotite from tuff 1 mi N 200' above "Clarendonian" fauna; this is the 11.72 +/- 0.05 Ma Rainier Mountain ash of Perkins et al. 1998; insofar as their section spans 800 m and > 5.46 my, the fauna is about 12.14 Ma and should fall close to their CPT V ash KA 577 - 11.5 (= 11.81) Ma, sanidine from 1 mi NW, 50' higher than KA 452; said to be "near middle of fossiliferous section" by Tedford et al. 1987
Stirton's record of "Megabelodon minor" is from UCMP V-6145 Gomphothere locality, which is separated from other Cedar Mountain localities by block faulting: Mawby 1968a
probably includes Tedford Pocket (UCMP V-1984), dated by Evernden et al. 1964 as follows: KA 452 - 10.7 (= 10.98) Ma, biotite from tuff 1 mi N 200' above "Clarendonian" fauna; this is the 11.72 +/- 0.05 Ma Rainier Mountain ash of Perkins et al. 1998; insofar as their section spans 800 m and > 5.46 my, the fauna is about 12.14 Ma and should fall close to their CPT V ash KA 577 - 11.5 (= 11.81) Ma, sanidine from 1 mi NW, 50' higher than KA 452; said to be "near middle of fossiliferous section" by Tedford et al. 1987
Stirton's record of "Megabelodon minor" is from UCMP V-6145 Gomphothere locality, which is separated from other Cedar Mountain localities by block faulting: Mawby 1968a
Show authors, comments, and common names
| Mammalia | |
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Gomphotheriidae indet. Hay 1922 gomphothere | |
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Aphelops megalodus5 Cope 1873 rhinoceros this may be the specimen from UCMP 2026 described by Merriam 1916a
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Hipparionini indet.1, Hipparion tehonense2, Pliohippus cf. tantalus, Hypohippus nevadensis n. sp.4, Megahippus cf. matthewi4
Pliohippus cf. tantalus Merriam 1913 horse | |
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Protolabis coartatus Stirton 1929 camel appears to be the type of Stirton 1929 from UCMP 2028 in "Stewart Valley" discussed by Honey and Taylor 1978, and by Merriam 1916a as "Procamelus nr. gracilis"
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Pseudaelurus sp. Leidy 1858 cat | |
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Aelurodon taxoides Hatcher 1894 bone-crushing dog confirmed by Wang et al. 1999, who place specimen at Snowball Valley North = UCMP V-6019
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Mustelidae indet. Fischer 1817 mustelid carnivore | |
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Limnoecus tricuspis Stirton 1930 shrew | |
"Copemys dentalis" = Peromyscus dentalis1
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Perognathus cf. minutus, Dipodomyinae indet., Cupidinimus cuyamensis1, "Cupidinimus quartus" = Perognathoides quartus1
Perognathus cf. minutus James 1963 pocket mouse
Dipodomyinae indet. rodent | |
"Eucastor dividerus" = Prodipoides dividerus
"Eucastor dividerus" = Prodipoides dividerus Stirton 1935 beaver | |
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Aplodontidae indet.3 Brandt 1855 mountain beaver specimen UC 19798, possibly Liodontia according to Wilson 1937b and omitted entirely by Firby
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Tamias ateles Hall 1930 chipmunk | |
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