Hartman Ranch (UCMP V-5814): Late Uintan, California
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
- Testudines
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Chelonia indet.
(Latreille 1800)
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Golz and Lillegraven 1977 | |||||||||
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Mammalia
- Rodentia
- Cylindrodontidae
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Pareumys sp.
Peterson 1919
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3 specimens | |||||||||
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Mammalia
- Rodentia
- Simimyidae
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Simimys sp.
Wilson 1935
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9 specimens | |||||||||
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Mammalia
- Rodentia
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Griphomys sp.
Wilson 1940
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2 specimens | |||||||||
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= Griphomys alecer
Wilson 1940
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Kelly and Whistler 1994 | |||||||||
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Mammalia
- Rodentia
- Eomyidae
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Namatomys fantasma n. sp.
Lindsay 1968
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25 specimens | |||||||||
| (4 measurements) | ||||||||||
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= Metanoiamys fantasma
Lindsay 1968
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Alroy 2002 | |||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | California | County: | Ventura |
| Coordinates: | 34.6° North, 119.3° West (view map) | ||||
| Paleocoordinates: | 34.8° North, 106.0° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | small collection |
Time
| Period: | Paleogene | Epoch: | Eocene |
| 10 m.y. bin: | Cenozoic 2-3 | ||
| *Period: | Tertiary | ||
| Key time interval: | Late Uintan | ||
| Age range of interval: | 46.2 - 39.7 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Sespe |
Lithology and environment
| Primary lithology: | coarse,green calcareous sandstone |
| Secondary lithology: | red "shale" |
| Includes fossils? | Y |
| Lithology description: Fossils were collected from calcareous, green, thin lenses of coarse-grained sandstone within the red shales near the base of the Sespe Formation. The sandstone lenses are lithologically similar to the Coldwater Sandstone that underlies the Sespe Formation and suggest local intertonguing of the Lower Sespe Formation with characteristic Coldwater Sandstone. | |
| Environment: | fluvial-lacustrine indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | UCMP |
| Taxonomic list comments:NOT in the Simi Valley "approximately 140 isolated teeth"; this appears to include @101 unidentifiable specimens presumably there are other mammals, but they are not even hinted at "near the top of Chron C19n (about 41.2 Ma)": Prothero and Vance 1995 | |
Metadata
| Database number: | 16817 | ||
| Authorizer: | J. Alroy, P. Holroyd | Enterer: | J. Alroy, P. Holroyd |
| Modifier: | J. Marcot | Research group: | vertebrate |
| Created: | 1993-02-18 00:00:00 | Last modified: | 2023-09-29 12:49:40 |
| Access level: | the public | Released: | 1993-02-18 00:00:00 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 2242. | E. H. Lindsay. 1968. Rodents from the Hartman Ranch Local Fauna, California. PaleoBios 6:1-22 [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] | |
| 1681 | D. J. Golz and J. A. Lillegraven. 1977. Summary of known occurrences of terrestrial vertebrates from Eocene strata of southern California. Contributions to Geology, University of Wyoming 15(1):43-65 [J. Alroy/J. Alroy/J. Marcot] | |
| 2074 | T. S. Kelly and D. P. Whistler. 1994. Additional Uintan and Duchesnean (Middle and Late Eocene) mammals from the Sespe Formation, Simi Valley, California. Contributions in Science, Natural History Museum of Los Angeles County 439:1-29 [J. Alroy/J. Alroy/J. Marcot] |