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
? Trochocyathus striatus (Gabb 1864)
original and current combination Trochosmilia (Acrosmilia) striata
Bivalvia - Ostreida - Malleidae
Nayadina (Exputens) llajasensis (Clark 1934)
Bivalvia - Carditida - Crassatellidae
Crassatella uvasana Conrad 1855
Scaphopoda - Dentaliida - Dentaliidae
Dentalium stentor Anderson and Hanna 1925
Gastropoda - Heterostropha - Architectonicidae
Architectonica (Stellaxis) cognata (Gabb 1864)
Gastropoda - Ampullinidae
Eocernina hannibali (Dickerson 1914)
Pachycrommium clarki (Stewart 1927)
Gastropoda - Strombidae
Ectinochilus (Macilentos) macilentus (White 1889)
original and current combination Rimella macilenta
Gastropoda - Neogastropoda - Turridae
Surculites mathewsonii (Gabb 1864)
Gastropoda - Cassidae
Galeodea (Caliagaleodea) californica Clark 1942
recombined as Galeodea californica
Gastropoda - Turritellidae
Turritella andersoni Dickerson 1916
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]