USGS 3922 - Garnet Cañon [Imperial Fm] (Miocene to of the United States)

Where: Imperial County, California (32.8° N, 116.0° W: paleocoordinates 32.6° N, 114.5° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Imperial Formation, Messinian to Messinian (7.2 - 3.6 Ma)

• 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.

• bed-level stratigraphic resolution

Environment/lithology: marine; poorly lithified sandstone

• SPECIFIC LITHOLOGY: Fossil collections generally originate from sandstone layers. LITHIFICATION: Poorly lithified, on the basis of figured specimens.

Size class: macrofossils

Collected by Bowers in 1904; reposited in the USGS

Collection methods: bulk,

• COLLECTORS: S. Bowers, 1904. REPOSITORY: USGS.

Primary reference: 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]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 96541: authorized by Austin Hendy, entered by Austin Hendy on 11.06.2010, edited by Mark Uhen

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for molluscs. NOMENCLATURE: Authoritative publication, with antiquated nomenclature, and species-resolution identifications.
unclassified
  -
Gastropoda
 Neotaenioglossa - Calyptraeidae
Crucibulum spinosum Conrad 1855 slipper shell
 Neogastropoda - Fasciolariidae
"Fasciolaria princeps" = Triplofusus princeps
"Fasciolaria princeps" = Triplofusus princeps Sowerby 1825 snail
 Sorbeoconcha - Tonnidae
Malea ringens Swainson 1822 tun shell
 Opisthobranchia - Bullidae
"Bullaria striata" = Bulla striata
"Bullaria striata" = Bulla striata Bruguiére 1792 snail
Bivalvia
 Pectinida - Anomiidae
"Anomia subcostata" = Anomia peruviana
"Anomia subcostata" = Anomia peruviana d'Orbigny 1846 jingle
 Pectinida - Pectinoidae
"Pecten mendenhalli" = Argopecten mendenhalli, "Pecten keepi" = Euvola keepi, "Pecten carrizoensis" = Flabellipecten carrizoensis
"Pecten mendenhalli" = Argopecten mendenhalli Arnold 1906 calico scallop
"Pecten keepi" = Euvola keepi Arnold 1906 scallop
"Pecten carrizoensis" = Flabellipecten carrizoensis Arnold 1906 scallop
 Ostreida - Pinnidae
"Pinna mendenhalli n. sp." = Pinna (Pinna) mendenhalli, Pinna latrania n. sp.
"Pinna mendenhalli n. sp." = Pinna (Pinna) mendenhalli Hanna 1926 oyster
Pinna latrania n. sp. Hanna 1926 oyster
 Ostreida - Ostreidae
"Ostrea vespertina" = Dendostrea vespertina
"Ostrea vespertina" = Dendostrea vespertina Conrad 1855 oyster
 Lucinida - Lucinidae
Codakia colpoica Dall 1901 clam
Echinoidea
 Clypeasteroida - Clypeasteridae
Clypeaster bowersi Weaver 1908 sand dollar
 Clypeasteroida - Mellitidae
Encope tenuis Kew 1914 sand dollar
Chondrichthyes
 Lamniformes - Otodontidae
Otodus megalodon Agassiz 1835 megalodon