USGS loc. M4621: Early/Lower Pliocene, California
collected by W. O. Addicott, J. S. Galehouse, D. L. Durham
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Rhynchonellata
- Terebratulida
- Terebrataliidae
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Terebratalia cf. arnoldi
Hertlein and Grant IV 1944
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Bivalvia
- Pholadida
- Pholadidae
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Nettastomella rostrata
(Valenciennes 1846)
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| recombined as Netastoma rostratum | ||||||||||
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Bivalvia
- Pholadida
- Myidae
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Sphenia luticola
(Valenciennes 1846)
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Bivalvia
- Ostreida
- Ostreidae
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Ostrea vespertina
Conrad 1855
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| recombined as Dendostrea vespertina | ||||||||||
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Ostrea atwoodi
(Gabb 1866)
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| recombined as Ostrea (Ostrea) atwoodii | ||||||||||
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Crassostrea titan
(Conrad 1853)
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| reworked from underlying strata | ||||||||||
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Bivalvia
- Pectinida
- Pectinidae
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Hinnites giganteus
(Gray 1825)
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| recombined as Crassadoma gigantea | ||||||||||
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Gastropoda
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Gastropoda indet.
Cuvier 1795
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| predatory borings into bivalve shells | ||||||||||
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Thecostraca
- Balanomorpha
- Balanidae
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Balanus sp.
Da Costa 1778
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | California | County: | San Luis Obispo |
| Coordinates: | 35.5° North, 120.6° West (view map) | ||||
| Paleocoordinates: | 35.3° North, 119.4° West |
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: | Paso Robles | ||||
| Stratigraphy comments: The exposure here is in the lowermost part of the Paso Robles
Formation, which in this area unconformably overlies Monterey Shale |
Lithology and environment
| Primary lithology: | conglomeratic sandstone |
| Includes fossils? | Y |
| Lithology description: Lithologically, the section exposed is typical of the Paso Robles Formation, consisting mainly of sand and gravel. The gravel clasts exposed in the quarry were derived from the Monterey Shale | |
| Environment: | coastal indet. |
Taphonomy
| Modes of preservation: | body,original aragonite,original calcite |
| Size of fossils: | macrofossils |
| Bioerosion: | occasional |
Collection methods and comments
| Reason for describing collection: | general faunal/floral analysis |
| Museum repositories: | USGS |
| Collectors: | W. O. Addicott, J. S. Galehouse, D. L. Durham |
Metadata
| Database number: | 211317 | ||
| Authorizer: | J. Marcot | Enterer: | J. Marcot | Research group: | marine invertebrate |
| Created: | 2020-07-14 06:03:22 | Last modified: | 2020-07-14 01:03:22 |
| Access level: | the public | Released: | 2020-07-14 06:03:22 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 73006. | W. O. Addicott and J. S. Galehouse. 1973. Pliocene marine fossils in the Paso Robles Formation, California. Journal of Research of the U. S. Geological Survey 1(5):509-514 [J. Marcot/J. Marcot] |