CAS Loc. 113, Mitchell Creek: Hauterivian, California
collected by Anderson 1929

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia - Cardiida - Veneridae
Venus collinium n. sp. Anderson 1938
Bivalvia - Ostreida - Ostreidae
Ostrea indigena n. sp. Anderson 1938
Bivalvia - Pectinida - Plicatulidae
Plicatula variata Gabb 1864
Squires and Saul 1997
Plicatula onoensis n. sp. Anderson 1938
Cephalopoda - Ammonitida - Ancyloceratidae
Anahamulina vespertina n. sp. Anderson 1938
Aspinoceras hamlini n. sp. Anderson 1938
Cephalopoda - Ammonitida - Polyptychitidae
Simbirskites broadi n. sp. Anderson 1938
Subastieria chanchelula n. sp. Anderson 1938
Polyptychites lecontei n. sp. Anderson 1938
Polyptychites hesperius n. sp. Anderson 1938
    = Hollisites sp. Imlay 1957
Imlay 1960
"probably belongs to "Hollisites"
Cephalopoda - Ammonitida - Lytoceratidae
Lytoceras saturnale (Anderson 1938)
Imlay 1960
Lytoceras aulaeum n. sp. Anderson 1938
Cephalopoda - Ammonitida - Crioceratitidae
? Pseudothurmannia jupiter (Anderson 1938)
Imlay 1960
Crioceras latum (Gabb 1864)
Cephalopoda - Diplobelida - Diplobelidae
Belemnoteuthis (Conoteuthis) pacifica n. sp. Anderson 1938
Cephalopoda - Belemnitida - Belemnitidae
Acroteuthis shastensis n. sp. Anderson 1938
see common names

Geography
Country:United States State/province:California County:Shasta
Coordinates: 40.4° North, 122.7° West (view map)
Paleocoordinates:39.2° North, 72.0° West
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period: Cretaceous Epoch: Early Cretaceous
Stage: Hauterivian 10 m.y. bin: Cretaceous 2
Key time interval: Hauterivian
Age range of interval: 132.6 - 125.77 m.y. ago
Stratigraphy
Formation:Budden Canyon
Stratigraphic resolution:bed
Stratigraphy comments: STRATIGRAPHIC RELATIONS: From the Ono Fm. AGE: Hauterivian, on the basis of macrofossil biostratigraphy. STRATIGRAPHIC POSITION: From unknown position within formation.
[Murphy and Rodda 1959] " We believe that the fossils from Anderson's locality (California Academy of Sciences locality 113) and, hence, his Hamlin-Broad zone were collected in the general area at the head of Mitchell Creek and represent at least four fossiliferous horizons"
Lithology and environment
Primary lithology: lithified "siliciclastic"
Includes fossils?Y
Lithology description: SPECIFIC LITHOLOGY: Not stated, but probably siliciclastic. LITHIFICATION: Lithified on the basis of figured specimens.
Environment:marine indet.
Geology comments: ENVIRONMENT: Not stated in text.
Taphonomy
Modes of preservation:cast,mold/impression
Size of fossils:macrofossils
Collection methods and comments
Collection excludes:some macrofossils
Collection methods:surface (in situ),survey of museum collection
Reason for describing collection:taxonomic analysis
Museum repositories:CAS
Collectors:Anderson Collection dates:1929
Collection method comments: COLLECTORS: F.M. Anderson and G.D. Hanna, 1929. REPOSITORY: CAS.
Taxonomic list comments:COVERAGE: Exhaustive for ammonoidea. Other taxonomic groups may be present but are not listed. NOMENCLATURE: Authoritative publication, with fairly modern nomenclature, and species-resolution identifications.
Metadata
Also known as:CASG Loc. 66511
Database number:83591
Authorizer:A. Hendy, J. Marcot, P. Holroyd Enterer:A. Hendy, J. Marcot, S. Tremblay
Modifier:J. Marcot Research group:marine invertebrate
Created:2008-08-22 12:06:01 Last modified:2023-06-12 13:12:08
Access level:the public Released:2008-08-22 12:06:01
Creative Commons license:CC BY
Reference information

Primary reference:
56760. F. M. Anderson. 1938. Lower Cretaceous deposits in California and Oregon. Geological Society of America Special Paper 16:1-331 [M. Clapham/M. Clapham]

Secondary references:

28036 R. W. Imlay. 1960. Ammonites of Early Cretaceous age (Valanginian and Hauterivian) from the Pacific Coast states. United States Geological Survey Professional Paper 334(F):1-228 [A. Hendy/A. Hendy]
65883 R. L. Squires and L. R. Saul. 1997. Review of bivalve genus Plicatula from Cretaceous and Lower Cenozoic strata of California and Baja California. Journal of Paleontology 71(2):287-298 [P. Holroyd/S. Tremblay/P. Wagner]