Univ. Cal. Loc. 3206 - Pleito Fm: Early/Lower Oligocene, California
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia
- Mytilida
- Mytilidae
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Mytilus mathewsonii
Gabb 1866
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recombined as Crenomytilus mathewsoni | ||||||||||
Bivalvia
- Pectinida
- Pectinidae
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Pecten cf. diabloensis
Clark 1924
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synonym of Vertipecten kernensis | ||||||||||
entered as "Pecten cf. gabbi," presumably Clark's (1918) homonym of Dall's (1898) name | ||||||||||
Bivalvia
- Hiatellida
- Hiatellidae
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Panopea aff. estrellana
(Conrad 1857)
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synonym of Panopea abrupta | ||||||||||
Bivalvia
- Cardiida
- Veneridae
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Dosinia mathewsonii
Gabb 1869
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synonym of Dosinia (Dosinia) whitneyi | ||||||||||
Gastropoda
- Neogastropoda
- Siphonaliidae
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Agasoma gravida
(Gabb 1866)
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recombined as Bruclarkia gravida | ||||||||||
Gastropoda
- Neogastropoda
- Buccinidae
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Agasoma acuminatum
Anderson and Martin 1914
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see common names |
Geography
Country: | United States | State/province: | California | County: | Kern |
Coordinates: | 35.0° North, 119.2° West (view map) | ||||
Paleocoordinates: | 33.4° North, 109.4° West | ||||
Basis of coordinate: | based on nearby landmark | ||||
Geographic resolution: | outcrop |
Time
Period: | Paleogene | Epoch: | Oligocene |
Stage: | Rupelian | 10 m.y. bin: | Cenozoic 4 |
Key time interval: | Early/Lower Oligocene | ||
Age range of interval: | 33.90000 - 27.82000 m.y. ago |
Stratigraphy
Geological group: | San Lorenzo | Formation: | Pleito | ||
Stratigraphic resolution: | bed | ||||
Stratigraphy comments: STRATIGRAPHIC RELATIONS: From Pleito Fm of the San Lorenzo Group, which unconformably overlies the San Emigdio Fm (Late Eocene), and is unconformably overlain by the Pleito Fm (Early Oligocene) of the San Lorenzo Group. THICKNESS: From bed within unit of formation that reaches 600 ft in thicknes. AGE: Late Eocene on the basis of molluscan biostratigraphy. STRATIGRAPHIC POSITION: From middle unit of the formation. |
Lithology and environment
Primary lithology: | shelly/skeletal,brown,gray,blue lithified conglomeratic sandstone |
Secondary lithology: | fine,shelly/skeletal lithified sandstone |
Includes fossils? | Y |
Includes fossils? | Y |
Lithology description: SPECIFIC LITHOLOGY: Massive dark brown and buff sandstones with fossiliferous layers and light bluish gray massive conglomerates towards base. LITHIFICATION: Presumably lithified on the basis of age. | |
Environment: | coastal indet. |
Geology comments: ENVIRONMENT: Presumably shallow marine, siliciclastic assemblage. |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils |
Collection methods and comments
Collection methods: | surface (in situ),field collection |
Reason for describing collection: | biostratigraphic analysis |
Museum repositories: | UCMP |
Collection method comments: COLLECTOR: Presumably C. M. Wagner and K. H. Schilling (1917). REPOSITORY: Univeristy of California Collections of Invertebrate Paleontology, presumably UCMP. | |
Taxonomic list comments:COVERAGE: Exhaustive for gastropoda, bivalvia, scaphopoda, and cirripedia. NOMENCLATURE: Antiquated nomenclature, but an authoritative publication with species-level assignments. |
Metadata
Database number: | 71194 | ||
Authorizer: | A. Hendy | Enterer: | A. Hendy | Research group: | marine invertebrate |
Created: | 2007-04-20 22:42:30 | Last modified: | 2013-11-25 13:37:23 |
Access level: | the public | Released: | 2007-04-20 22:42:29 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
23848. | C. M. Wagner and K. H. Schilling. 1923. The San Lorenzo Group of the San Emigdio region, California. University of California Publications, Bulletin of the Department of Geological Sciences 14(6):235-276 [A. Hendy/A. Hendy/A. Hendy] |