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 190779: authorized by Patricia Holroyd, entered by Patricia Holroyd on 17.12.2017
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
Turritella infragranulata Gabb 1864 turret shell | |
Ampullina striata Gabb 1869 snail | |
"Galerus excentricus" = Calyptraea diegoana
"Galerus excentricus" = Calyptraea diegoana Conrad 1855 slipper shell | |
Urosyca caudata Gabb 1869 fig shell | |
Tritonium martinezensis Dickerson 1914 triton | |
"Brachysphingus liratus" = Brachysphingus sinuatus
"Brachysphingus liratus" = Brachysphingus sinuatus Gabb 1869 true whelk | |
"Cylichna costata" = Scaphander (Mirascapha) costatus
"Cylichna costata" = Scaphander (Mirascapha) costatus Gabb 1864 snail | |
Bivalvia | |
"Leda gabbi" = Nuculana (Saccella) gabbii
"Leda gabbi" = Nuculana (Saccella) gabbii Conrad 1866 pointed nut clam | |
"Nucula (Acila) sp." = Acila
"Nucula (Acila) sp." = Acila Adams and Adams 1858 divaricate nutclam | |
Cucullaea mathewsonii Gabb 1864 clam | |
"Phacoides turneri" = Claibornites (Codalucina) turneri
"Phacoides turneri" = Claibornites (Codalucina) turneri Stanton 1896 clam | |
? Zirphaea sp. Gray 1840 clam | |
Teredo sp. Linnaeus 1758 clam | |
Corbula sp. Bruguière 1789 clam | |
Meretrix stantoni Dickerson 1914 venus clam
Tapes "sp. a" Mühlfeld 1811 venus clam
? Paphia clarki Dickerson 1914 venus clam | |
"Cardium cooperi" = Nemocardium (Nemocardium) linteum
"Cardium cooperi" = Nemocardium (Nemocardium) linteum Conrad 1855 cockle | |
Tellina "sp. a" Linnaeus 1758 tellin clam | |
Anthozoa | |
"Flabellum remondianum" = Flabellum cuneiforme
"Flabellum remondianum" = Flabellum cuneiforme Lonsdale 1845 stony coral |