Where: Contra Costa County, California (38.0° N, 122.2° W: paleocoordinates 43.9° N, 100.0° 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 190787: authorized by Patricia Holroyd, entered by Patricia Holroyd on 17.12.2017
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
Anchura sp. Conrad 1860 snail | |
"Fusus cf. martinez" = Whitneyella martinez
"Fusus cf. martinez" = Whitneyella martinez Gabb 1864 snail | |
Amauropsis martinezensis Dickerson 1914 moon snail | |
Bivalvia | |
"Phacoides turneri" = Claibornites (Codalucina) turneri
"Phacoides turneri" = Claibornites (Codalucina) turneri Stanton 1896 clam | |
"Leda packardi" = Nuculana (Saccella) packardi
"Leda packardi" = Nuculana (Saccella) packardi Dickerson 1914 pointed nut clam |