List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Anthozoa
- Scleractinia
- Caryophylliidae
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? Trochocyathus striatus
(Gabb 1864)
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Squires 1984 | |||||||||
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Sabellida
- Serpulidae
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Rotularia tejonense
(Arnold 1909)
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Squires 1984 | |||||||||
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Scaphopoda
- Dentaliida
- Dentaliidae
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Dentalium stentor
Anderson and Hanna 1925
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Squires 1984 | |||||||||
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Bivalvia
- Ostreida
- Malleidae
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Nayadina (Exputens) llajasensis
(Clark 1934)
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Squires 1984 | |||||||||
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Bivalvia
- Lucinida
- Lucinidae
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Claibornites diegoensis
(Dickerson 1916)
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Squires 1984 | |||||||||
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Bivalvia
- Solenida
- Solenidae
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Solena (Eosolen) navacularis
(Anderson and Hanna 1925)
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Squires 1984 | |||||||||
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Bivalvia
- Cardiida
- Cardiidae
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Nemocardium linteum
(Conrad 1855)
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Squires 1984 | |||||||||
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Bivalvia
- Carditida
- Carditidae
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Venericardia (Pacificor) hornii calafia
(Stewart 1930)
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Squires 1984 | |||||||||
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Bivalvia
- Carditida
- Crassatellidae
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Crassatella uvasana
Conrad 1855
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Squires 1984 | |||||||||
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Gastropoda
- Cypraeidae
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Bernaya kaylinae
Groves and Squires 2023
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Groves and Squires 2023 | |||||||||
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Gastropoda
- Strombidae
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Ectinochilus (Macilentos) macilentus
(White 1889)
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Squires 1984 | |||||||||
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Gastropoda
- Neogastropoda
- Fasciolariidae
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Clavilithes sp. n. sp.
Swainson 1840
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Gastropoda
- Neogastropoda
- Turridae
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Surculites mathewsonii
(Gabb 1864)
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Squires 1984 | |||||||||
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Gastropoda
- Neogastropoda
- Clavatulidae
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Fusiturricula (Crenaturricula) crenatospira domenginica
Vokes 1939
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Squires 1984 | |||||||||
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Gastropoda
- Neogastropoda
- Volutidae
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Lyrischapa lajollaensis
(Hanna 1927)
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Squires 1984 | |||||||||
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Gastropoda
- Cassidae
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Galeodea (Caliagaleodea) californica
Clark 1942
|
Squires 1984 | |||||||||
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Phalium (Semicassis) tuberculiformis
(Gabb 1864)
|
Squires 1984 | |||||||||
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Gastropoda
- Cymatiidae
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Olequahia domenginica
(Vokes 1939)
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Squires 1984 | |||||||||
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Gastropoda
- Ranellidae
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Cymatium janetae n. sp.
Squires 1983
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Cymatium (Septa) janetae
Squires 1983
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Squires 1984 | |||||||||
| paratype | ||||||||||
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Gastropoda
- Ampullinidae
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Eocernina hannibali
(Dickerson 1914)
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Squires 1984 | |||||||||
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Gastropoda
- Turritellidae
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Turritella andersoni lawsoni
(Dickerson 1916)
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Squires 1984 | |||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | California | County: | Ventura |
| Coordinates: | 34.0° North, 118.0° West (view map) | ||||
| Paleocoordinates: | 39.6° North, 94.2° West (Wright 2013) | ||||
| Geographic resolution: | small collection |
Time
| Period: | Paleogene | Epoch: | Eocene |
| Stage: | Ypresian - Lutetian | 10 m.y. bin: | Cenozoic 2 |
| *Period: | Early/Lower Tertiary - Middle Tertiary | *Epoch: | Early/Lower Eocene - Middle Eocene |
| *International age/stage: | Middle Lutetian - Early/Lower Ypresian | *Local age/stage: | Domengine - Domengine |
| Key time interval: | Ypresian - Lutetian | ||
| Age range of interval: | 56 - 41.2 m.y. ago | ||
| * legacy (obsolete) database fields | |||
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. | |||||
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: | taxonomic analysis |
| Museum repositories: | LACM |
| Taxonomic list comments:New species only. | |
Metadata
| Also known as: | LACMIP Loc. 40455; CIT Loc. 215; LACMIP loc. 11809 | ||
| Database number: | 8014 | ||
| Authorizer: | L. Ivany, J. Marcot | Enterer: | E. Kowalski, J. Marcot |
| Modifier: | J. Marcot | Research group: | marine invertebrate |
| Created: | 2000-06-12 07:01:27 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2000-06-12 07:01:27 |
| Creative Commons license: | CC0 | ||
Reference information
Primary reference:
| 519. | R. L. Squires. 1983. New Mollusks from the Lower Middle Eocene Llajas Formation, Southern California. Journal of Paleontology 57(2):354-362 [L. Ivany/E. Kowalski/J. Marcot] |
Secondary references:
| 86508 | L. T. Groves and R. L. Squires. 2023. Revision of northeast Pacific Paleogene cypraeoidean gastropods (Mollusca), including recognition of three new species: Implications for paleobiogeographic distribution and faunal turnover. PaleoBios 40(10):1-52 [J. Marcot/J. Marcot] | |
| 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] |