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 190786: authorized by Patricia Holroyd, entered by Patricia Holroyd on 17.12.2017, edited by Austin Hendy
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
| |
Anthozoa | |
"Flabellum remondianum" = Flabellum cuneiforme
"Flabellum remondianum" = Flabellum cuneiforme Lonsdale 1845 stony coral | |
Gnathostomata | |
| |
Echinoidea | |
Schizaster lecontei Merriam 1899 heart urchin | |
Bivalvia | |
"Leda gabbi" = Nuculana (Saccella) gabbii, "Leda packardi" = Nuculana (Saccella) packardi
"Leda gabbi" = Nuculana (Saccella) gabbii Conrad 1866 pointed nut clam
"Leda packardi" = Nuculana (Saccella) packardi Dickerson 1914 pointed nut clam | |
Cucullaea mathewsonii Gabb 1864 clam | |
Glycymerita major Stanton 1896 clam | |
Pholadomya nasuta Gabb 1864 clam | |
Solen sp., "Solen stantoni" = Solena (Eosolen) stantoni
Solen sp. Linnaeus 1758 clam
"Solen stantoni" = Solena (Eosolen) stantoni Weaver 1905 clam | |
Teredo sp. Linnaeus 1758 clam | |
"Tellina undulifera" = Tellina (Saulella) undulifera
"Tellina undulifera" = Tellina (Saulella) undulifera Gabb 1869 tellin clam | |
"Cardium cooperi" = Nemocardium (Nemocardium) linteum
"Cardium cooperi" = Nemocardium (Nemocardium) linteum Conrad 1855 cockle | |
"Meretrix dalli" = Pitaria praenominata, ? Paphia clarki
"Meretrix dalli" = Pitaria praenominata Hanna 1924 venus clam
? Paphia clarki Dickerson 1914 venus clam | |
"Crassatellites unioides" = Crassatella unioides
"Crassatellites unioides" = Crassatella unioides Stanton 1896 clam | |
Gastropoda | |
"Ringinella pinguis" = Ringicula (Ringicula) pinguis
"Ringinella pinguis" = Ringicula (Ringicula) pinguis Gabb 1864 snail | |
"Cylichna costata" = Scaphander (Mirascapha) costatus
"Cylichna costata" = Scaphander (Mirascapha) costatus Gabb 1864 snail | |
Turritella infragranulata Gabb 1864 turret shell | |
Tritonium martinezensis Dickerson 1914 triton | |
"Neptunea mucronata" = Sycum mucronatum
"Neptunea mucronata" = Sycum mucronatum Gabb 1869 snail | |
Surcula merriami Dickerson 1914 snail | |
"Natica (Gyrodes) lineata" = Lacunaria striata
"Natica (Gyrodes) lineata" = Lacunaria striata Gabb 1869 moon snail | |
Scaphopoda | |
Dentalium cooperi Gabb 1864 tusk shell | |
Rhynchonellata | |
Terebratulina tejonensis Stanton 1896 |