USGS 3922 - Garnet Cañon [Imperial Fm]: Messinian - Zanclean, California
collected by Bowers 1904

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Hippnoe californica
1 specimen
Gastropoda - Neotaenioglossa - Calyptraeidae
Crucibulum spinosum Conrad 1855
1 specimen
Gastropoda - Neogastropoda - Fasciolariidae
Fasciolaria princeps Sowerby 1825
1 specimen
recombined as Triplofusus princeps
Gastropoda - Tonnidae
Malea ringens (Swainson 1822)
1 specimen
Gastropoda - Opisthobranchia - Bullidae
Bullaria striata (Bruguiére 1792)
2 specimens
original and current combination Bulla striata
Bivalvia - Pectinida - Anomiidae
Anomia subcostata Conrad 1855
6 specimens
synonym of Anomia peruviana
Bivalvia - Pectinida - Pectinidae
Pecten mendenhalli Arnold 1906
4 specimens
recombined as Argopecten mendenhalli
Pecten keepi Arnold 1906
2 specimens
recombined as Euvola keepi
Pecten carrizoensis Arnold 1906
1 specimen
recombined as Flabellipecten carrizoensis
Bivalvia - Ostreida - Pinnidae
Pinna mendenhalli n. sp. Hanna 1926
2 specimens
recombined as Pinna (Pinna) mendenhalli
Pinna latrania n. sp. Hanna 1926
1 specimen
Bivalvia - Ostreida - Ostreidae
Ostrea vespertina Conrad 1855
7 specimens
recombined as Dendostrea vespertina
Bivalvia - Lucinida - Lucinidae
Codakia colpoica Dall 1901
3 specimens
Echinoidea - Clypeasteroida - Clypeasteridae
Clypeaster bowersi Weaver 1908
2 specimens
Echinoidea - Clypeasteroida - Mellitidae
Encope tenuis Kew 1914
2 specimens
Chondrichthyes - Lamniformes - Otodontidae
Carcharodon arnoldi Jordan 1898
1 specimen
    = Otodus megalodon Agassiz 1835
Boessenecker et al. 2019
see common names

Geography
Country:United States State/province:California County:Imperial
Coordinates: 32.8° North, 116.0° West (view map)
Paleocoordinates:32.6° North, 114.5° West
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period:Neogene
10 m.y. bin:Cenozoic 6
Key time interval:Messinian - Zanclean
Age range of interval:7.24600 - 3.60000 m.y. ago
Age estimate:6.43 to 4.187 Ma (other)
Stratigraphy
Formation:Imperial
Stratigraphic resolution:bed
Stratigraphy comments: Age and Formation after Boessenecker et al 2019.
STRATIGRAPHIC RELATIONS: From the Imperial Formation, for which lithostratigraphic relationships are not discussed. AGE: Early Pliocene, based on existing (more recent) collections. STRATIGRAPHIC POSITION: From unknown position within formation.
Lithology and environment
Primary lithology: poorly lithified sandstone
Includes fossils?Y
Lithology description: SPECIFIC LITHOLOGY: Fossil collections generally originate from sandstone layers. LITHIFICATION: Poorly lithified, on the basis of figured specimens.
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:bulk,field collection
Reason for describing collection:taxonomic analysis
Museum repositories:USGS
Collectors:Bowers Collection dates:1904
Collection method comments: COLLECTORS: S. Bowers, 1904. REPOSITORY: USGS.
Taxonomic list comments:COVERAGE: Exhaustive for molluscs. NOMENCLATURE: Authoritative publication, with antiquated nomenclature, and species-resolution identifications.
Metadata
Database number:96541
Authorizer:A. Hendy, M. Uhen Enterer:A. Hendy, M. Uhen
Modifier:M. Uhen Research group:marine invertebrate
Created:2010-06-11 19:29:29 Last modified:2019-02-19 12:30:25
Access level:the public Released:2010-06-11 19:29:29
Creative Commons license:CC BY
Reference information

Primary reference:

32774. G. D. Hanna. 1926. Paleontology of Coyote Mountain, Imperial County, California. Proceedings of the California Academy of Sciences 14(18):427-503 [A. Hendy/A. Hendy]

Secondary references:

13595 R. W. Boessenecker, D. J. Eheret, D. J. Long, M. Churchill, E. Martin and S. J. Boessenecker. 2019. The Early Pliocene extinction of the mega-toothed shark Otodus megalodon: a view from the eastern North Pacific. PeerJ 7:e6088 [M. Uhen/M. Uhen/M. Uhen]