USGS Cenozoic M975 San Ardo (Miocene of the United States)

Also known as UCMP IP6653

Where: Monterey County, California (36.0° N, 120.9° W: paleocoordinates 35.3° N, 116.5° W)

• coordinate stated in text

When: Pancho Rico Formation, Miocene (23.0 - 5.3 Ma)

• Described in reference as Pliocene. Pancho Rico Formation is Miocene per Addicott 1978 (Geological Survey Bulletin, Issue 1457).

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Collected by C. L. Rice in 1960

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 194799: authorized by Patricia Holroyd, entered by Susan Tremblay on 29.06.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

Maxillopoda
 Sessilia - Balanidae
Bivalvia
 Pectinida - Pectinoidae
"Hinnites giganteus" = Crassadoma gigantea
"Hinnites giganteus" = Crassadoma gigantea Gray 1825 scallop
 Ostreida - Ostreidae
"Ostrea atwoodi" = Ostrea (Ostrea) atwoodii
"Ostrea atwoodi" = Ostrea (Ostrea) atwoodii Gabb 1866 oyster
 Mytilida - Mytilidae
Mytilus sp. Linnaeus 1758 mussel
Gastropoda
 Calyptraeoidea - Calyptraeidae
Crucibulum "n. sp. ?" Schumacher 1817 slipper shell
Crepidula sp. Lamarck 1799 slipper shell
 Sorbeoconcha - Turritellidae
"Turritella gonostoma" = Turritella (Broderiptella) gonostoma Valenciennes 1832 turret shell
hemphilli
Echinoidea
 Clypeasteroida - Echinarachniidae
"Astrodapsis crassus" = Astrodapsis arnoldi crassus
"Astrodapsis crassus" = Astrodapsis arnoldi crassus Kew 1920 sand dollar