List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda
- Ampullinidae
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Eocernina hannibali
(Dickerson 1914)
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Squires 1984 | |||||||||
Pachycrommium clarki
(Stewart 1927)
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Squires 1984 | |||||||||
Gastropoda
- Strombidae
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Ectinochilus (Macilentos) macilentus
(White 1889)
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Squires 1984 | |||||||||
original and current combination Rimella macilenta | ||||||||||
Gastropoda
- Neogastropoda
- Olividae
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Olivella mathewsonii
Gabb 1864
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Squires 1984 | |||||||||
Gastropoda
- Neogastropoda
- Clavatulidae
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Fusiturricula (Crenaturricula) crenatospira
(Cooper 1894)
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Squires 1984 | |||||||||
recombined as Crenaturricula crenatospira | ||||||||||
as Fusiturricula (Crenaturricula) crenatospira domenginica | ||||||||||
Gastropoda
- Neogastropoda
- Conidae
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Conus caleocius
Vokes 1939
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Squires 1984 | |||||||||
Conus hornii
Gabb 1864
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Squires 1984 | |||||||||
as Conus hornii umpquaensis | ||||||||||
Gastropoda
- Neogastropoda
- Clathurellidae
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Domenginella claytonensis
(Gabb 1864)
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Squires 1984 | |||||||||
Gastropoda
- Neogastropoda
- Turridae
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Surculites mathewsonii
(Gabb 1864)
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Squires 1984 | |||||||||
Gastropoda
- Neogastropoda
- Volutidae
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Lyria andersoni
Waring 1917
|
Squires 1984 | |||||||||
Gastropoda
- Ranellidae
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Cymatium janetae n. sp.
Squires 1983
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Gastropoda
- Bursidae
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Ranellina pilsbryi
Stewart 1927
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Squires 1984 | |||||||||
Gastropoda
- Cerithiopsidae
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Cerithiopsis llajasensis
Squires 1984
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Squires 1984 | |||||||||
Gastropoda
- Opisthobranchia
- Retusidae
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Cylichnina tantilla
(Anderson and Hanna 1925)
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Squires 1984 | |||||||||
Bivalvia
- Pholadida
- Corbulidae
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Corbula (Caryocorbula) dickersoni
(Weaver and Palmer 1922)
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Squires 1984 | |||||||||
see common names |
Geography
Country: | United States | State/province: | California | County: | Los Angeles |
Coordinates: | 34.0° North, 118.0° West (view map) | ||||
Paleocoordinates: | 35.8° North, 102.2° West | ||||
Geographic resolution: | small collection |
Time
Period: | Paleogene | Epoch: | Eocene |
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: | 56.00000 - 41.30000 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. 16189 | ||
Database number: | 8018 | ||
Authorizer: | L. Ivany, J. Marcot | Enterer: | E. Kowalski, J. Marcot |
Modifier: | J. Marcot | Research group: | marine invertebrate |
Created: | 2000-06-12 08:47:08 | Last modified: | 2022-02-12 17:49:06 |
Access level: | the public | Released: | 2000-06-12 08:47:08 |
Creative Commons license: | CC BY |
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:
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] |