CIT Loc. 1017 - Chico Creek [Chico Fm]: Santonian, California
collected by Popenoe & Scharf 1931

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia - Cardiida - Mesodesmatidae
Califadesma elafium Saul 1989
Saul 1989
Bivalvia - Cardiida - Veneridae
Calva (Egelicalva) taffi (Anderson 1958)
Saul and Popenoe 1992
Bivalvia - Myalinida - Inoceramidae
Inoceramus cf. ezoensis Yokoyama 1890
Gastropoda - Epitoniidae
Amaea cerva n. sp. Squires and Saul 2003
Squires and Saul 2003
Gastropoda - Neogastropoda - Perissityidae
Forsia lorda Saul 1988
Saul 1988
Perissitys elaphia Popenoe and Saul 1987
Popenoe and Saul 1987
Gastropoda - Naticidae
Gyrodes (Sohlella) banites Popenoe et al. 1987
Popenoe et al. 1987
Gastropoda - Heterostropha - Ringiculidae
Biplica heteroplicata Popenoe 1957
Popenoe 1957 9 specimens
Cephalopoda - Ammonitida - Desmoceratidae
Hauericeras (Gardeniceras) angustum (Yabe 1904)
see common names

Geography
Country:United States State/province:California County:Butte
Coordinates: 39.9° North, 121.7° West (view map)
Paleocoordinates:45.1° North, 86.6° West
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Santonian 10 m.y. bin:Cretaceous 6
Key time interval:Santonian
Age range of interval:86.30000 - 83.60000 m.y. ago
Stratigraphy
Formation:Chico
Stratigraphic resolution:bed
Stratigraphy comments: LITHOSTRATIGRAPHIC RELATIONS: From the Chico Fm, for which no lithostratigraphic relationships are discussed. AGE: Santonian in text; on the basis of ammonite biostratigraphy. STRATIGRAPHIC POSITION: Sandstone layer cropping out about 100 ft below lava-Cretaceous contact; lower part of Chico Fm.
Lithology and environment
Primary lithology: lithified sandstone
Includes fossils?Y
Lithology description: LITHOLOGY: Sandstone. LITHIFICATION: Lithified, on the basis of figured specimens.
Environment:coastal indet.
Geology comments: ENVIRONMENT: Not reported in text, but apparently shallow marine siliciclastic.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection excludes:some genera
Collection methods:surface (in situ),survey of museum collection
Reason for describing collection:taxonomic analysis
Museum repositories:LACM
Collectors:Popenoe & Scharf Collection dates:1931
Collection method comments: COLLECTOR: Popenoe and Scharf, 1931. REPOSITORY: California Institute of Technology (at the time).
Taxonomic list comments:COVERAGE: Includes multiple taxa reported in several publications; exhaustive for Ammonoidea. NOMENCLATURE: From authoritative publications, but comprising variable nomenclatural quality and species-resolution identifications.
Metadata
Also known as:LACMIP Loc. 10849
Database number:86781
Authorizer:A. Hendy, J. Marcot Enterer:A. Hendy, J. Marcot
Modifier:J. Marcot Research group:marine invertebrate
Created:2009-02-17 12:35:30 Last modified:2021-09-11 12:40:06
Access level:the public Released:2009-02-17 12:35:30
Creative Commons license:CC BY
Reference information

Primary reference:
29214. T. Matsumoto. 1960. Upper Cretaceous ammonites of California. Part III. Memoirs of the Faculty of Science, Kyushu University Series D, Geology, Special Volume II 1-204 [A. Hendy/A. Hendy/A. Hendy]

Secondary references:

29215 W. P. Popenoe. 1957. The Cretaceous gastropod genus Biplica. University of California Publications in Geological Sciences 30(6):425-454 [A. Hendy/A. Hendy]
243791% 7220W. P. Popenoe and L. R. Saul. 1987. Evolution and classification of the Late Cretaceous-Early Tertiary gastropod Perissitys. Contributions in Science 380:1-37 [W. Kiessling/U. Merkel]
11856 W. P. Popenoe, L. R. Saul, and T. Susuki. 1987. Gyrodiform gastropods from the Pacific coast Cretaceous and Paleocene. Journal of Paleontology 61(1):70-100 [M. Kosnik/M. Kosnik/M. Kosnik]
74397 L. R. Saul. 1988. New Late Cretaceous and Early Tertiary Perissityidae (Gastropoda) from the Pacific Slope of North America. Contributions in Science, Los Angeles County Museum 400:1-25 [J. Marcot/J. Marcot]
71459 L. R. Saul. 1989. California Late Cretaceous donaciform bivalves. The Veliger 32(2):188-208 [J. Marcot/J. Marcot]
75750 L. R. Saul and W. P. Popenoe. 1992. Pacific Slope Cretaceous bivalves of the genus Calva. Contributions in Science, Los Angeles County Museum 433:1-68 [J. Marcot/J. Marcot]
75586 R. L. Squires and L. R. Saul. 2003. New Late Cretaceous epitoniid and zygopleurid gastropods from the Pacific Slope of North America. The Veliger 46(1):20-49 [J. Marcot/J. Marcot]