UCMP loc. 2964, Reef Ridge: Early/Lower Pliocene, California
collected by Nomland
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Cardiida
- Veneridae
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Paphia staminea
(Conrad 1837)
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| recombined as Leukoma staminea | ||||||||||
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Bivalvia
- Arcida
- Arcidae
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Arca trilineata
Conrad 1856
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| recombined as Anadara trilineata | ||||||||||
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Bivalvia
- Pectinida
- Pectinidae
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Pecten hastatus
Sowerby 1842
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| recombined as Chlamys hastata | ||||||||||
| as ssp. Pecten hastatus hindsii | ||||||||||
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Pecten terminus
(Arnold 1906)
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| recombined as Lyropecten terminus | ||||||||||
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Gastropoda
- Neogastropoda
- Cancellariidae
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Cancellaria fernandoensis
Arnold 1907
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| recombined as Euclia fernandoensis | ||||||||||
| as ssp. Cancellaria fernandoensis tribulus | ||||||||||
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Gastropoda
- Neogastropoda
- Siphonaliidae
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Chrysodomus portolaensis
(Arnold 1908)
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| recombined as Lirabuccinum portolaensis | ||||||||||
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Gastropoda
- Neogastropoda
- Olividae
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Olivella biplicata
(Sowerby 1825)
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| recombined as Callianax biplicata | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | California | County: | Fresno |
| Coordinates: | 35.9° North, 120.2° West (view map) | ||||
| Paleocoordinates: | 35.7° North, 118.9° West | ||||
| Basis of coordinate: | stated in text |
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
| Formation: | Jacalitos | ||||
| Stratigraphy comments: "Probably Turritella nova zone" |
Lithology and environment
| Primary lithology: | coarse lithified sandstone |
| Secondary lithology: | conglomerate |
| Lithology description: On Jacalitos Creek the Pliocene strata comprise essentially an alternation of soft coarse sandstone and conglomerate. In many of the fossiliferous horizons the beds have been much indurated, causing these strata to outcrop prominently. Of minor importance are shale, rhyolitie tuff, and thin layers of coal. A bed of silicious limestone having a thickness of about ten feet was traced more than one-half mile until cut off by faulting. A short distance above and below the limestone marine fossils were found. | |
| Environment: | marginal marine indet. |
| Geology comments: The beds of coal, the coarseness of the sandstones and conglomerates, the variation of the lithology within short distances, and the character of the molluscan fauna may be taken as indicative of deposition under shallow water conditions. The occurrence of quantities of gypsum at some localities, if it can be proved to be interstratified with the clastic rocks, may indicate that in part the beds are terrestrial or that the basin of deposition was nearly isolated from the sea. | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | general faunal/floral analysis |
| Museum repositories: | UCMP |
| Collectors: | Nomland |
Metadata
| Database number: | 220177 | ||
| Authorizer: | J. Marcot | Enterer: | J. Marcot | Research group: | marine invertebrate |
| Created: | 2021-05-11 15:33:33 | Last modified: | 2021-05-11 15:33:33 |
| Access level: | the public | Released: | 2021-05-11 15:33:33 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 2657. | J. O. Nomland. 1917. The Etchegoin Pliocene of middle California. University of California Publications, Bulletin of the Department of Geology 10(14):191-254 [J. Alroy/J. Alroy/J. Marcot] |