USGS Cenozoic M1930 Indian Valley (Miocene of the United States)

Also known as UCMP IP6935

Where: Monterey County, California (35.9° N, 120.7° W: paleocoordinates 35.2° N, 116.3° 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 D. L Durham in 1963

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 194892: authorized by Patricia Holroyd, entered by Susan Tremblay on 06.07.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

 Sessilia - Balanidae
Balanus sp. Da Costa 1778 barnacle
 Ostreida - Ostreidae
"Ostrea atwoodi" = Ostrea (Ostrea) atwoodii
"Ostrea atwoodi" = Ostrea (Ostrea) atwoodii Gabb 1866 oyster
 Carditida - Carditidae
Cyclocardia sp. Conrad 1867 clam
 Cardiida - Tellinidae
"Florimetis biangulata" = Psammotreta (Leporimetis) obesa Deshayes 1855 tellin clam
? Macoma nasuta Conrad 1837 tellin clam
  - Siphonaliidae
? Calicantharus sp. Clark 1938 snail
 Neogastropoda - Columbellidae
Mitrella gausapata Gould 1850 snail
 Calyptraeoidea - Calyptraeidae
Crucibulum "n. sp. ?" Schumacher 1817 slipper shell
Calyptraea filosa Gabb 1866 slipper shell
? Crepidula cf. princeps Conrad 1855 slipper shell
 Sorbeoconcha - Turritellidae
 Trochoidea - Trochidae