UCMP 788 (Paleocene of the United States)

Where: Lake County, California (38.9° N, 122.6° W: paleocoordinates 44.8° N, 100.3° W)

• coordinate based on nearby landmark

When: Martinez Formation, Paleocene (66.0 - 56.0 Ma)

• Martinez Fm. discussed as Eocene by Dickerson 1914, but rocks now regarded as Paleocene following Stewart, Ralph, 1949, Lower Tertiary stratigraphy of Mount Diablo, Marysville Buttes, and west border of lower Central Valley of California: U.S. Geological Survey Oil and Gas Investigations Preliminary Chart, OC-34.

Environment/lithology: marine; lithology not reported

Size classes: macrofossils, mesofossils

Reposited in the UCMP

Primary reference: R. E. Dickerson. 1914. Fauna of the Martinez Eocene of California. Bulletin of the Department of Geology, University of California 6:61-180 [P. Holroyd/P. Holroyd/A. Hendy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 190797: authorized by Patricia Holroyd, entered by Patricia Holroyd on 17.12.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Mytilida - Mytilidae
Modiolus ornatus Gabb 1864 mussel
 Pholadomyida - Pholadomyidae
Pholadomya nasuta Gabb 1864 clam
Gastropoda
 Naticoidea - Naticidae
Natica sp. Scopoli 1777 moon snail
 Sorbeoconcha - Turritellidae
Turritella pachecoensis Stanton 1896 turret shell
Turritella infragranulata Gabb 1864 turret shell
Scaphopoda
 Dentaliida - Dentaliidae
Dentalium cooperi Gabb 1864 tusk shell
Echinoidea
 Spatangoida - Schizasteridae
"Schizaster lecontei" = Schizaster (Paraster) lecontei
"Schizaster lecontei" = Schizaster (Paraster) lecontei Merriam 1899 heart urchin