USGS Cenozoic M2280 Greenfield (Miocene of the United States)

Also known as UCMP IP7143

Where: Monterey County, California (36.3° N, 121.0° W: paleocoordinates 36.0° N, 119.1° 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 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 195037: authorized by Patricia Holroyd, entered by Susan Tremblay on 12.07.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
 Neogastropoda - Nassariidae
Nassarius cf. grammatus Dall 1917 snail
forma canalis
 Neogastropoda - Siphonaliidae
Bivalvia
 Pectinida - Pectinoidae
"Hinnites giganteus" = Crassadoma gigantea Gray 1825 scallop
Patinopecten lohri Hertlein 1927 scallop
Lyropecten terminus Arnold 1906 scallop
 Pectinida - Anomiidae
"Pododesmus cepio" = Pododesmus (Monia) macrochisma
"Pododesmus cepio" = Pododesmus (Monia) macrochisma Deshayes 1839 scallop
 Ostreida - Ostreidae
"Ostrea atwoodi" = Ostrea (Ostrea) atwoodii
"Ostrea atwoodi" = Ostrea (Ostrea) atwoodii Gabb 1866 oyster
 Arcida - Arcidae
Anadara cf. trilineata Conrad 1856 ark
 Cardiida - Mactridae
Spisula sp. Gray 1837 clam