USGS Mesozoic loc. 1010 (Cretaceous of the United States)

Also known as USGS Mesozoic loc. 1093, USGS loc. M3061

Where: Tehama County, California (40.1° N, 122.2° W: paleocoordinates 38.1° N, 71.4° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Buchia pacifica zone, Paskenta Formation, Valanginian (139.8 - 132.9 Ma)

• STRATIGRAPHIC RELATIONS: From the Paskenta Fm. AGE: Valanginian, on the basis of macrofossil biostratigraphy. STRATIGRAPHIC POSITION: From unknown position within formation.

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified siliciclastic sediments

• ENVIRONMENT: Not stated in text.
• SPECIFIC LITHOLOGY: Not stated, but probably siliciclastic. LITHIFICATION: Lithified on the basis of figured specimens.

Size class: macrofossils

Preservation: cast, mold/impression

Collected by Diller & Storrs; Imlay in 1893; 1965; reposited in the USNM

Collection methods: surface (in situ),

• COLLECTORS: Diller and Storrs, 1893. REPOSITORY: USNM, Washington DC.

Primary reference: 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]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 83608: authorized by Austin Hendy, entered by Austin Hendy on 22.08.2008, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

• 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.
Cephalopoda
 Ammonitida - Bochianitidae
Bochianites paskentaensis Anderson 1933 ammonite
 Ammonitida - Polyptychitidae
Homolsomites mutabilis Stanton 1895 ammonite
type locality of ssp. Homolsomites mutabilis crassicostatus
 Ammonitida - Neocomitidae
Sarasinella angulata Stanton 1895 ammonite
Thurmanniceras jenkinsi Anderson 1933 ammonite
"probably"
 Belemnitida - Belemnitidae
"Belemnites impressus" = Acroteuthis impressa, Belemnites sp.
"Belemnites impressus" = Acroteuthis impressa Gabb 1864 belemnite
Belemnites sp. belemnite
Scaphopoda
 Dentaliida - Dentaliidae
Dentalium californicum Stanton 1895 tusk shell
Gastropoda
 Murchisoniina - Zygopleuridae
Hypsipleura gregaria Stanton 1895 snail
 Cerithioidea - Cerithiidae
Cerithium strigosum Stanton 1895 cerith snail
Bivalvia
  - Aviculidae
 Nuculanida - Nuculanidae
Leda glabra Stanton 1895 pointed nut clam
 Pectinida - Buchiidae
"Aucella crassicollis" = Buchia crassicollis
"Aucella crassicollis" = Buchia crassicollis Keyserling 1846 scallop
 Ostreida - Pinnidae
Pinna sp. Linnaeus 1758 oyster
 Arcida - Parallelodontidae
"Arca tehamaensis" = Parallelodon (Gilbertwhitea) tehamaensis Stanton 1895 clam
 Carditida - Astartidae
Astarte corrugata Stanton 1895 clam