UCMP V-1001, Mount Diablo Base Line: Miocene, California
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Mammalia
- Perissodactyla
- Equidae
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Nannippus tehonensis
(Merriam 1916)
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= Hipparionini indet.
Quinn 1955
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Alroy 2002 | |||||||||
| - possibly "Hipparion" trampasense: Edwards 1982; possibly same as "H. tehonense" from "the lower part of the Moraga Formation" of Creely et al. 1982 | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | California | County: | Contra Costa |
| Coordinates: | 37.9° North, 122.2° West (view map) | ||||
| Paleocoordinates: | 37.1° North, 117.9° West | ||||
| Basis of coordinate: | based on political unit | ||||
| Geographic resolution: | small collection |
Time
| Period: | Neogene | Epoch: | Miocene |
| 10 m.y. bin: | Cenozoic 5-6 | ||
| *Period: | Tertiary | ||
| Key time interval: | Miocene | ||
| Age range of interval: | 23.03000 - 5.33300 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Lithology and environment
| Primary lithology: | "siliciclastic" |
| Environment: | terrestrial indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | general faunal/floral analysis |
| Museum repositories: | UCMP |
| Taxonomic list comments:said to actually be a "window" of the Orinda Fm. within the Moraga Fm. by Edwards 1982, but this has no effect on its lateral stratigraphic equivalence to the Siesta Fm. (see Creely et al. 1982) KA dates of 10.3 Ma for a basalt and 10.2 Ma for a tuff in the lower Moraga Fm. or equivalent basal parts of the Siesta Fm. of Tedford et al. 1987 are useless because the known faunas of the Orinda, Siesta, and Moraga are almost completely inderminate | |
Metadata
| Database number: | 19444 | ||
| Authorizer: | J. Alroy | Enterer: | J. Alroy |
| Modifier: | M. Uhen | Research group: | vertebrate |
| Created: | 2002-05-15 00:00:00 | Last modified: | 2020-03-18 17:41:01 |
| Access level: | the public | Released: | 2002-05-15 00:00:00 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 3233. | R. A. Stirton. 1939. Cenozoic Mammal Remains From the San Francisco Bay Region. University of California Publications, Bulletin of the Department of Geological Sciences 24(13):339-410 [J. Alroy/J. Alroy/J. Marcot] |
Secondary references:
| 6294 | J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari] |