USGS Cenozoic M1967 Powell Canyon (Miocene of the United States)

Also known as UCMP IP6967

Where: Monterey County, California (36.0° N, 120.7° W: paleocoordinates 35.6° N, 118.8° W)

• coordinate stated in text

When: Pancho Rico Formation, Messinian (7.2 - 5.3 Ma)

• Described in reference as Pliocene. Pancho Rico Formation is Miocene per Addicott 1978 (Geological Survey Bulletin, Issue 1457). AGE: Revised to Messian consistent with EPICC stratigraphic revision [A. Hendy, 06/2020].

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Collected by D. L Durham, W. O. Addicott in 1964

Primary reference: D. L. Durham and W. O. Addicott. 1965. Pancho Rico Formation, Salinas Valley. United States Geological Survey Professional Paper 524(A):A1-A22 [P. Holroyd/S. Tremblay]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 195030: authorized by Patricia Holroyd, entered by Susan Tremblay on 12.07.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
 Trochoidea - Trochidae
"Calliostoma coalingense" = Calliostoma coalingensis
"Calliostoma coalingense" = Calliostoma coalingensis Arnold 1909 top snail
Strongly sculpted form
 Sorbeoconcha - Procerithiidae
"Bittium casmaliense" = Lirobittium casmaliense
"Bittium casmaliense" = Lirobittium casmaliense Bartsch 1911 snail
 Neogastropoda - Columbellidae
Mitrella gausapata Gould 1850 snail
Bivalvia
 Arcida - Arcidae
Anadara sp. Gray 1847 ark
 Cardiida - Tellinidae
"Florimetis biangulata" = Leporimetis obesa
"Florimetis biangulata" = Leporimetis obesa Deshayes 1855 tellin clam
 Cardiida - Veneridae
"Protothaca cf. laciniata" = Leukoma laciniata, "Protothaca tenerrima" = Callithaca tenerrima
"Protothaca cf. laciniata" = Leukoma laciniata Carpenter 1864 venus clam
subsp. hannibali
"Protothaca tenerrima" = Callithaca tenerrima Carpenter 1857 venus clam