CSUN Loc. 447, Las Llajas Canyon, Santa Susana Mountains: Lutetian, California
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Anthozoa
- Scleractinia
- Acrosmiliidae
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? Trochocyathus striatus
(Gabb 1864)
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original and current combination Trochosmilia (Acrosmilia) striata | ||||||||||
Bivalvia
- Ostreida
- Malleidae
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Nayadina (Exputens) llajasensis
(Clark 1934)
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Bivalvia
- Carditida
- Crassatellidae
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Crassatella uvasana
Conrad 1855
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Scaphopoda
- Dentaliida
- Dentaliidae
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Dentalium stentor
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
- Ampullinidae
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Eocernina hannibali
(Dickerson 1914)
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Pachycrommium clarki
(Stewart 1927)
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Gastropoda
- Strombidae
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Ectinochilus (Macilentos) macilentus
(White 1889)
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original and current combination Rimella macilenta | ||||||||||
Gastropoda
- Neogastropoda
- Turridae
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Surculites mathewsonii
(Gabb 1864)
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Gastropoda
- Cassidae
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Galeodea (Caliagaleodea) californica
Clark 1942
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recombined as Galeodea californica | ||||||||||
Gastropoda
- Turritellidae
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Turritella andersoni
Dickerson 1916
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as Turritella andersoni lawsoni | ||||||||||
see common names |
Geography
Country: | United States | State/province: | California | County: | Ventura |
Coordinates: | 34.3° North, 118.7° West (view map) | ||||
Paleocoordinates: | 35.1° North, 104.6° West | ||||
Basis of coordinate: | estimated from map | ||||
Altitude: | 1550 feet | ||||
Geographic resolution: | small collection |
Time
Period: | Paleogene | Epoch: | Eocene |
Stage: | Lutetian | 10 m.y. bin: | Cenozoic 2 |
Key time interval: | Lutetian | ||
Age range of interval: | 47.80000 - 41.30000 m.y. ago |
Stratigraphy
Formation: | Llajas | ||||
Stratigraphic resolution: | bed | ||||
Stratigraphy comments: The stewart bed is a 1 m thick sandstone unit in the middle of the LLajas formation. Lutetian, chron 21r according to Squires (2001). |
Lithology and environment
Primary lithology: | bioturbation sandstone |
Includes fossils? | Y |
Lithology description: sandstone. | |
Environment: | offshore |
Geology comments: The Stewart bed is located in a section of transition from shallow-marine to outer slope and shelf facies. |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils |
Collection methods and comments
Collection excludes: | all microfossils,some macrofossils |
Collection methods: | bulk,field collection |
Reason for describing collection: | general faunal/floral analysis |
Museum repositories: | LACM |
Collection method comments: Repository: Formerly California State University Northridge (CSUN) |
Metadata
Database number: | 200838 | ||
Authorizer: | J. Marcot | Enterer: | J. Marcot |
Modifier: | J. Marcot | Research group: | marine invertebrate |
Created: | 2019-04-22 10:47:49 | Last modified: | 2020-01-02 00:46:35 |
Access level: | the public | Released: | 2019-04-22 10:47:49 |
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] |