USGS Mesozoic loc. 29489; Oakes Ranchhouse: Late Tithonian, California
collected by D. L. Jones and R. W. Imlay 1966
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Pectinida
- Buchiidae
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Buchia aff. okensis
(Pavlow 1907)
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Buchia trigonoides
(Lahusen Smith 1894)
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Cephalopoda
- Ammonitida
- Neocomitidae
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Parodontoceras cf. storrsi
(Stanton 1895)
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Imlay and Jones 1970 | ||||||
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Cephalopoda
- Phylloceratida
- Phylloceratidae
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? Phylloceras contrarium
Imlay and Jones 1970
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Imlay and Jones 1970 | ||||||
| see common names | |||||||
Geography
| Country: | United States | State/province: | California | County: | Tehama |
| Coordinates: | 40.0° North, 122.6° West (view map) | ||||
| Paleocoordinates: | 36.2° North, 69.7° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Jurassic | Epoch: | Late Jurassic |
| Stage: | Tithonian | 10 m.y. bin: | Jurassic 6 |
| Key time interval: | Late Tithonian | ||
| Age range of interval: | 146.3 - 145 m.y. ago |
Stratigraphy
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Late Tithonian. Buchia aff. B. okensis (Pavlow) zone. | |||||
Lithology and environment
| Primary lithology: | lithified sandstone |
| Secondary lithology: | concretionary mudstone |
| Includes fossils? | Y |
| Lithology description: From thin interbeds of graywacke and mudstone containing limestone concretions | |
| Environment: | marine indet. |
| Geology comments: ENVIRONMENT: Not stated in text. | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | surface (in situ),field collection | ||
| Reason for describing collection: | general faunal/floral analysis | ||
| Museum repositories: | USNM | ||
| Collectors: | D. L. Jones and R. W. Imlay | Collection dates: | 1966 |
Metadata
| Database number: | 83599 | ||
| Authorizer: | A. Hendy, J. Marcot | Enterer: | A. Hendy, J. Marcot |
| Modifier: | J. Marcot | Research group: | marine invertebrate |
| Created: | 2008-08-22 12:29:25 | Last modified: | 2022-04-05 14:31:57 |
| Access level: | the public | Released: | 2008-08-22 12:29:25 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 81204. | D. L. Jones, E. H. Bailey, and R. W. Imlay. 1969. Structural and stratigraphic significance of the Buchia zones in the Colyear Springs-Paskenta Area, California. United States Geological Survey Professional Paper (647-A)A1-A24 [J. Marcot/J. Marcot] |
Secondary references:
| 28036 | R. W. Imlay. 1960. Ammonites of Early Cretaceous age (Valanginian and Hauterivian) from the Pacific Coast states. United States Geological Survey Professional Paper 334(F):1-228 [A. Hendy/A. Hendy] | |
| 74406 | R. W. Imlay and D. L. Jones. 1970. Ammonites from the Buchia zones in northwestern California and southwestern Oregon. United States Geological Survey Professional Paper 647-B:B1-B59 [J. Marcot/J. Marcot] |