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 190773: authorized by Patricia Holroyd, entered by Patricia Holroyd on 17.12.2017, edited by Jonathan Marcot
Creative Commons license: CC BY (attribution)
Taxonomic list
Foraminifera | |
| |
Echinoidea | |
Schizaster lecontei Merriam 1899 heart urchin | |
Gastropoda | |
"Turritella conica" = Turritella polynominata
"Turritella conica" = Turritella polynominata Hanna 1924 turret shell | |
Turris monolifera, "Bela cf. clathrata" = Surculites mathewsonii
Turris monolifera Cooper 1894 turrid
"Bela cf. clathrata" = Surculites mathewsonii Gabb 1864 turrid | |
Ficopsis remondii Gabb 1864 fig shell | |
"Rimella canalifera" = Ectinochilus (Cowlitzia) canalifer
"Rimella canalifera" = Ectinochilus (Cowlitzia) canalifer Gabb 1864 true conch | |
"Cassidaria tuberculata" = Phalium (Semicassis) tuberculiformis
"Cassidaria tuberculata" = Phalium (Semicassis) tuberculiformis Gabb 1864 snail | |
Tritonium impressum Weaver 1905 triton
Tritonium eocenicum Weaver 1905 triton | |
"Megistostoma striata" = Megistostoma gabbianum
"Megistostoma striata" = Megistostoma gabbianum Stoliczka 1868 snail | |
Bivalvia | |
"Venericardia planicosta" = Venericor planicosta
"Venericardia planicosta" = Venericor planicosta Lamarck 1801 clam | |
"Thracia karquinezensis" = Thracia karquinesensis
"Thracia karquinezensis" = Thracia karquinesensis Weaver 1905 clam | |
"Solen parallelus" = Solena (Plectosolen) parallelus
"Solen parallelus" = Solena (Plectosolen) parallelus Gabb 1864 clam | |
"Cardium cooperii" = Nemocardium (Nemocardium) linteum
"Cardium cooperii" = Nemocardium (Nemocardium) linteum Conrad 1855 cockle | |
"Tellina martinezensis" = Tellina (Eurytellina) martinezensis
"Tellina martinezensis" = Tellina (Eurytellina) martinezensis Weaver 1905 tellin clam | |
"Tellina hornii" = Gari (Gobraeus) hornii
"Tellina hornii" = Gari (Gobraeus) hornii Gabb 1864 clam | |
Modiolus merriami Weaver 1905 mussel | |
"Pecten interradiatus" = Propeamussium interradiatum
"Pecten interradiatus" = Propeamussium interradiatum Gabb 1869 mud scallop | |
Polychaeta | |
"? Spiroglyphus tejonensis" = Rotularia (Rotularia) tejonense
"? Spiroglyphus tejonensis" = Rotularia (Rotularia) tejonense Arnold 1909 |