CAS Loc. 25730 - Sand Creek [Forbes Shale]: Coniacian, California
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Gastropoda
- Pseudomelaniidae
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Pseudomelania colusaensis n. sp.
Anderson 1958
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Cephalopoda
- Nautilida
- Nautilidae
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Nautilus campbelli
Meek 1861
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Cephalopoda
- Ammonitida
- Pachydiscidae
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Eupachydiscus arbucklensis n. sp.
Anderson 1958
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| recombined as Patagiosites arbucklensis | ||||||||||
| (2 measurements) | ||||||||||
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Nowakites dobbinsi n. sp.
Anderson 1958
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| synonym of Patagiosites arbucklensis | ||||||||||
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Nowakites rumseyensis n. sp.
Anderson 1958
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| synonym of Patagiosites arbucklensis | ||||||||||
| (1 measurement) | ||||||||||
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Puzosia (Holcodiscoides) gorrilli n. sp.
Anderson 1958
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| synonym of Patagiosites arbucklensis | ||||||||||
| (1 measurement) | ||||||||||
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Puzosia (Parapuzosia) arenaica n. sp.
Anderson 1958
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| synonym of Patagiosites arbucklensis | ||||||||||
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Eupachydiscus willgreeni n. sp.
Anderson 1958
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| synonym of Patagiosites arbucklensis | ||||||||||
| (1 measurement) | ||||||||||
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Cephalopoda
- Ammonitida
- Tetragonitidae
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Parapachydiscus cortinaensis n. sp.
Anderson 1958
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| (1 measurement) | ||||||||||
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= Gaudryceras cf. striatum
Jimbo 1894
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Matsumoto 1960 | |||||||||
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Cephalopoda
- Ammonitida
- Baculitidae
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Baculites aff. inornatus
Meek 1862
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Bivalvia
- Myalinida
- Inoceramidae
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Inoceramus subundatus
Meek 1861
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Inoceramus aff. klamathensis
Anderson 1902
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Inoceramus schmidti
Sokolow 1914
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Matsumoto 1960 | |||||||||
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Inoceramus aff. digitatus
Sowerby 1829
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Inoceramus undulatoplicatus
Roemer 1852
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| recombined as Cladoceramus undulatoplicatus | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | California | County: | Colusa |
| Coordinates: | 39.0° North, 122.2° West (view map) | ||||
| Paleocoordinates: | 43.2° North, 86.6° West | ||||
| Basis of coordinate: | stated in text | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Coniacian | 10 m.y. bin: | Cretaceous 6 |
| Key time interval: | Coniacian | ||
| Age range of interval: | 89.80000 - 86.30000 m.y. ago |
Stratigraphy
Lithology and environment
| Primary lithology: | lithified "shale" |
| Includes fossils? | Y |
| Lithology description: Shale. | |
| Environment: | marine indet. |
| Geology comments: No paleoenvironmental data reported. | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | selective quarrying,field collection |
| Reason for describing collection: | biostratigraphic analysis |
| Collection method comments: Collected by Dobbins and Anderson; identified by Anderson. | |
| Taxonomic list comments:Probably not exhaustive, but representative. | |
Metadata
| Database number: | 44235 | ||
| Authorizer: | A. Hendy, M. Clapham, J. Marcot | Enterer: | A. Hendy, M. Clapham, J. Marcot |
| Modifier: | J. Marcot | Research group: | marine invertebrate |
| Created: | 2004-09-06 11:39:18 | Last modified: | 2022-06-10 12:56:31 |
| Access level: | the public | Released: | 2004-09-06 11:39:18 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 11610. | F. M. Anderson. 1958. Upper Cretaceous of the Pacific Coast. Geological Society of America Memoir 71:1-378 [A. Miller/A. Hendy/M. Clapham] |
Secondary references:
| 29214 | T. Matsumoto. 1960. Upper Cretaceous ammonites of California. Part III. Memoirs of the Faculty of Science, Kyushu University Series D, Geology, Special Volume II 1-204 [A. Hendy/A. Hendy/A. Hendy] |