CSUN Loc. 486, Santa Susana Mountains: Lutetian, California
collected by Squires 1978
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Gastropoda
- Opisthobranchia
- Retusidae
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Cylichnina tantilla
(Anderson and Hanna 1925)
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Gastropoda
- Heterostropha
- Architectonicidae
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Architectonica (Stellaxis) cognata
(Gabb 1864)
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Gastropoda
- Ficidae
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Ficopsis remondii
(Gabb 1864)
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| recombined as Ficus remondii | ||||||||||
| as Ficopsis remondii crescentensis | ||||||||||
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Gastropoda
- Neogastropoda
- Clathurellidae
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Domenginella claytonensis
(Gabb 1864)
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Gastropoda
- Neogastropoda
- Conidae
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Conus hornii
Gabb 1864
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| as Conus hornii umpquaensis | ||||||||||
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Gastropoda
- Neogastropoda
- Ptychatractidae
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Exilia llajasensis
Bentson 1940
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Gastropoda
- Bursidae
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Ranellina pilsbryi
Stewart 1927
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Gastropoda
- Naticidae
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Natica (Naticarius) aff. uvasana
(Gabb 1864)
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| original and current combination Natica uvasana | ||||||||||
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Gastropoda
- Turritellidae
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Turritella uvasana
Conrad 1855
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| as Turritella uvasana applinae | ||||||||||
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Turritella buwaldana
Dickerson 1916
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Gastropoda
- Ampullinidae
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Pachycrommium clarki
(Stewart 1927)
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Eocernina hannibali
(Dickerson 1914)
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | California | County: | Los Angeles |
| Coordinates: | 34.3° North, 118.6° West (view map) | ||||
| Paleocoordinates: | 35.1° North, 104.6° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Paleogene | Epoch: | Eocene |
| Stage: | Lutetian | 10 m.y. bin: | Cenozoic 2 |
| Key time interval: | Lutetian | ||
| Age range of interval: | 47.80000 - 41.20000 m.y. ago |
Stratigraphy
| Formation: | Llajas |
| Stratigraphic resolution: | bed |
Lithology and environment
| Primary lithology: | sandstone |
| Includes fossils? | Y |
| Environment: | offshore |
| Glacial or sequence phase: | transgressive |
| Geology comments: Shallow-marine (transgressive) facies | |
Taphonomy
| Modes of preservation: | body,mold/impression |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | medium |
Collection methods and comments
| Collection methods: | field collection,survey of museum collection | ||
| Reason for describing collection: | general faunal/floral analysis | ||
| Museum repositories: | LACM | ||
| Collectors: | Squires | Collection dates: | 1978 |
Metadata
| Database number: | 201695 | ||
| Authorizer: | J. Marcot | Enterer: | J. Marcot |
| Modifier: | J. Marcot | Research group: | marine invertebrate |
| Created: | 2019-05-21 13:30:34 | Last modified: | 2019-12-31 01:19:21 |
| Access level: | the public | Released: | 2019-05-21 13:30:34 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 59877. | R. L. Squires. 1984. Megapaleontology of the Eocene Llajas Formation, Simi Valley, California. Contributions in Science, Natural History Museum of Los Angeles County 350:1-76 [M. Clapham/M. Clapham] |