Cottonwood Creek: Early Albian, California
collected by Mathewson
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Insecta
- Blattodea
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Ptiloteuthis foliatus n. gen., n. sp.
Gabb 1869
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1 specimen | |||||||||
| originally thought to be a cephalopod (1 measurement) | ||||||||||
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Cephalopoda
- Ammonitida
- Ptychoceratidae
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Diptychoceras laevis n. gen., n. sp.
Gabb 1869
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | California | County: | Shasta |
| Coordinates: | 40.5° North, 122.6° West (view map) | ||||
| Paleocoordinates: | 40.6° North, 76.2° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Early Cretaceous |
| Stage: | Albian | 10 m.y. bin: | Cretaceous 4 |
| Key time interval: | Early Albian | ||
| Age range of interval: | 113 - 109.9 m.y. ago |
Stratigraphy
| Formation: | Budden Canyon | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: "Shasta Group" of Gabb. Early Albian age based on co-occurrence of ammonoid Diptychoceras laevis. In the Perrin Zone of the Horsetown Group, according to Anderson (1938), later placed in the Ono Formation by Murphy (1956). | |||||
Lithology and environment
| Primary lithology: | gray lithified claystone | ||
| Lithology description: Dense gray claystone. "Probably came from abundant gray concretions in the area" (Anderson, 1938). | |||
| Environment: | marine indet. | Tectonic setting: | forearc basin |
Taphonomy
| Modes of preservation: | mold/impression |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | ANSP |
| Collectors: | Mathewson |
Metadata
| Database number: | 122334 | ||
| Authorizer: | M. Clapham | Enterer: | J. Karr, M. Clapham |
| Modifier: | J. Marcot | Research group: | marine invertebrate,paleoentomology |
| Created: | 2011-12-21 18:33:10 | Last modified: | 2020-12-09 13:27:11 |
| Access level: | the public | Released: | 2011-12-21 18:33:10 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 56757. | W. M. Gabb. 1866. Section I. Tertiary Invertebrate Fossils. Part I. Description of New Species. Palaeontology of California, Volume II, Cretaceous and Tertiary Fossils 1-38 [M. Clapham/M. Clapham/J. Marcot] |
Secondary references:
| 56760 | F. M. Anderson. 1938. Lower Cretaceous deposits in California and Oregon. Geological Society of America Special Paper 16:1-331 [M. Clapham/M. Clapham] | |
| 38937 | J. W. H. Rehn. 1939. The genus Ptiloteuthis Gabb. Notulae Naturae of the Academy of Natural Sciences of Philadelphia 9:1-2 [M. Clapham/J. Karr/M. Clapham] |