CAS 682 - Alverson Cañon [Imperial Fm]: Early/Lower Pliocene, California
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Echinoidea
- Clypeasteroida
- Clypeasteridae
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Clypeaster bowersi
Weaver 1908
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1 specimen | ||||||
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Gastropoda
- Neotaenioglossa
- Calyptraeidae
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Crucibulum spinosum
Conrad 1855
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1 specimen | ||||||
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Gastropoda
- Turritellidae
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Turritella imperialis
Hanna 1926
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4 specimens | ||||||
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Vermicularia ebunea
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6 specimens | ||||||
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Gastropoda
- Cerithiidae
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Cerithium incisum
(Sowerby 1855)
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4 specimens | ||||||
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Gastropoda
- Modulidae
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Modulus unidens
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7 specimens | ||||||
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Gastropoda
- Neogastropoda
- Olividae
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Oliva spicata
Durham 1950
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8 specimens | ||||||
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Gastropoda
- Neogastropoda
- Turbinellidae
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Vasum caestum
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1 specimen | ||||||
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Gastropoda
- Neogastropoda
- Conidae
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Conus regularis
Sowerby 1841
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11 specimens | ||||||
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Gastropoda
- Neogastropoda
- Terebridae
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Terebra protexta
(Conrad 1845)
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1 specimen | ||||||
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Gastropoda
- Ficidae
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Ficus decussata
(Wood 1828)
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2 specimens | ||||||
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Gastropoda
- Strombidae
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Strombus obliteratus n. sp.
Hanna 1926
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6 specimens | ||||||
| recombined as Persististrombus obliteratus | |||||||
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Strombus gracilior
Sowerby 1825
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2 specimens | ||||||
| recombined as Strombus (Strombus) gracilior | |||||||
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Strombus galeatus
Swainson 1823
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2 specimens | ||||||
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Gastropoda
- Tonnidae
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Malea ringens
(Swainson 1822)
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1 specimen | ||||||
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Gastropoda
- Naticidae
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Natica uber
Valenciennes 1821
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4 specimens | ||||||
| recombined as Polinices uber | |||||||
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Natica unifasciata
Lamarck 1822
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2 specimens | ||||||
| recombined as Natica (Naticarius) unifasciata | |||||||
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Gastropoda
- Opisthobranchia
- Bullidae
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Bullaria striata
(Bruguiére 1792)
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13 specimens | ||||||
| original and current combination Bulla striata | |||||||
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Gastropoda
- Neritidae
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Neritina picta
Sowerby 1832
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77 specimens | ||||||
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Bivalvia
- Carditida
- Crassatellidae
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Crassatellites subgibbosus n. sp.
Hanna 1926
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13 specimens | ||||||
| recombined as Hybolophus subgibbosa | |||||||
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Bivalvia
- Lucinida
- Lucinidae
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Codakia colpoica
Dall 1901
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6 specimens | ||||||
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Divaricella eburnea
(Reeve 1850)
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8 specimens | ||||||
| recombined as Divalinga eburnea | |||||||
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Bivalvia
- Hiatellida
- Hiatellidae
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Panope generosa
(Gould 1850)
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1 specimen | ||||||
| original and current combination Panopea generosa | |||||||
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Bivalvia
- Cardiida
- Veneridae
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Dosinia dunkeri
(Philippi 1844)
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1 specimen | ||||||
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Bivalvia
- Cardiida
- Chamidae
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Echinochama californica
Dall 1903
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1 specimen | ||||||
| recombined as Arcinella californica | |||||||
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Bivalvia
- Arcida
- Glycymerididae
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Glycymeris gigantea
(Reeve 1843)
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5 specimens | ||||||
| recombined as Glycymeris (Glycymeris) gigantea | |||||||
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Bivalvia
- Ostreida
- Ostreidae
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Ostrea vespertina
Conrad 1855
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3 specimens | ||||||
| recombined as Dendostrea vespertina | |||||||
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Bivalvia
- Pectinida
- Pectinidae
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Pecten keepi
Arnold 1906
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2 specimens | ||||||
| recombined as Euvola keepi | |||||||
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Pecten carrizoensis
Arnold 1906
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7 specimens | ||||||
| recombined as Flabellipecten carrizoensis | |||||||
| 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: | lithified sandstone |
| Includes fossils? | Y |
| Lithology description: SPECIFIC LITHOLOGY: Sandstone. 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: | 96546 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2010-06-11 19:36:23 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | the public | Released: | 2010-06-11 19:36:23 |
| 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] |