CAS 681 - Alverson Cañon [Imperial Fm]: Early/Lower Pliocene, California
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Ostreida
- Ostreidae
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Ostrea vespertina
Conrad 1855
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5 specimens | ||||||
| recombined as Dendostrea vespertina | |||||||
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Bivalvia
- Pectinida
- Pectinidae
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Pecten mendenhalli
Arnold 1906
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1 specimen | ||||||
| recombined as Argopecten mendenhalli | |||||||
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Pecten keepi
Arnold 1906
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7 specimens | ||||||
| recombined as Euvola keepi | |||||||
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Pecten mediacostatus n. sp.
Hanna 1926
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1 specimen | ||||||
| recombined as Chlamys mediacostata | |||||||
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Pecten sanctiludovici
Anderson and Martin 1914
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12 specimens | ||||||
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= Chlamys cf. corteziana
Durham 1950
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Powell 2008 | ||||||
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Bivalvia
- Lucinida
- Lucinidae
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Phacoides xantusi
Dall 1903
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17 specimens | ||||||
| recombined as Miltha xantusi | |||||||
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Lucina edentuloides
(Verrill 1901)
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5 specimens | ||||||
| recombined as Pegophysema edentuloides | |||||||
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Bivalvia
- Cardiida
- Chamidae
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Chama frondosa
Broderip 1835
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13 specimens | ||||||
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Bivalvia
- Thraciida
- Thraciidae
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Cyathodonta undulata
Conrad 1849
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1 specimen | ||||||
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Gastropoda
- Heterostropha
- Architectonicidae
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Architectonica quadriceps
(Hinds 1887)
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1 specimen | ||||||
| synonym of Architectonica nobilis | |||||||
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Gastropoda
- Turritellidae
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Turritella imperialis
Hanna 1926
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6 specimens | ||||||
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Gastropoda
- Tonnidae
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Malea ringens
(Swainson 1822)
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1 specimen | ||||||
| see common names | |||||||
Geography
| Country: | United States | State/province: | California | County: | Imperial |
| Coordinates: | 32.8° North, 116.0° West (view map) | ||||
| Paleocoordinates: | 32.6° North, 114.8° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Neogene | Epoch: | Pliocene |
| Stage: | Zanclean | 10 m.y. bin: | Cenozoic 6 |
| Key time interval: | Early/Lower Pliocene | ||
| Age range of interval: | 5.33300 - 3.60000 m.y. ago |
Stratigraphy
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: STRATIGRAPHIC RELATIONS: From the Imperial Formation, for which lithostratigraphic relationships are not discussed. AGE: Early Pliocene, based on existing (more recent) collections. STRATIGRAPHIC POSITION: From the coral reef which crosses the canon toward its source. | |||||
Lithology and environment
| Primary lithology: | poorly lithified "reef rocks" |
| Includes fossils? | Y |
| Lithology description: SPECIFIC LITHOLOGY: Coral reef. LITHIFICATION: Poorly lithified, on the basis of figured specimens. | |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | bulk,field collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | CAS |
| Collection method comments: COLLECTORS: G.D. Hanna. REPOSITORY: CAS. | |
| Taxonomic list comments:COVERAGE: Exhaustive for molluscs. NOMENCLATURE: Authoritative publication, with antiquated nomenclature, and species-resolution identifications. | |
Metadata
| Database number: | 96545 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2010-06-11 19:35:08 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | the public | Released: | 2010-06-11 19:35:08 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 32774. | G. D. Hanna. 1926. Paleontology of Coyote Mountain, Imperial County, California. Proceedings of the California Academy of Sciences 14(18):427-503 [A. Hendy/A. Hendy] |
Secondary references:
| 32775 | C. L. Powell. 2008. Pliocene Invertebrates From the Travertine Point Outcrop of the Imperial Formation, Imperial County, California. United States Geological Survey Scientific Investigations 2008(5155):1-25 [A. Hendy/A. Hendy/A. Hendy] |