Univ. Cal. Loc. 3208 - Pleito Fm: Early/Lower Oligocene, California

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia - Mytilida - Mytilidae
Mytilus arnoldi Clark 1918
recombined as Mytilus (Mytilus) arnoldi
Bivalvia - Arcida - Arcidae
Arca sp. Linnaeus 1758
Bivalvia - Cardiida - Veneridae
Antigona undosa Clark 1918
Bivalvia - Cardiida - Mactridae
Spisula ramonensis (Packard 1916)
original and current combination Spisula albaria ramonensis
Bivalvia - Solenida - Solenidae
Solen cf. curtus Conrad 1848
replaced by Solena (Plectosolen) conradi
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:71196
Authorizer:A. Hendy Enterer:A. Hendy
Research group:marine invertebrate
Created:2007-04-20 22:43:04 Last modified:2013-11-25 13:37:23
Access level:the public Released:2007-04-20 22:43:03
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]