UCMP 337 (Paleocene of the United States)

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

Creative Commons license: CC BY (attribution)

Taxonomic list

? Nummuloidea indet.
Nummuloid (?) sp.
 Orbitoidacea - Orbitoididae
 Sabellida - Serpulidae
"? Spiroglyphus tejonensis" = Rotularia (Rotularia) tejonensis
"? Spiroglyphus tejonensis" = Rotularia (Rotularia) tejonensis Arnold 1910
 Mytilida - Mytilidae
 Carditida - Carditidae
"Venericardia planicosta" = Venericor planicosta
"Venericardia planicosta" = Venericor planicosta Lamarck 1801 clam
 Cardiida - Tellinidae
Tellina martinezensis Weaver 1905 tellin clam
 Cardiida - Psammobiidae
"Tellina hornii" = Gari (Gobraeus) hornii
"Tellina hornii" = Gari (Gobraeus) hornii Gabb 1864 clam
 Cardiida - Cardiidae
"Cardium cooperi" = Nemocardium (Nemocardium) linteum Conrad 1855 cockle
 Solenida - Solenidae
"Solen parallelus" = Solena (Plectosolen) parallelus
"Solen parallelus" = Solena (Plectosolen) parallelus Gabb 1864 clam
 Thraciida - Thraciidae
 Neogastropoda - Mangeliidae
Bela cf. clathrata Gabb 1868 snail
 Neogastropoda - Turridae
Turris monolifera Cooper 1894 turrid
 Prosobranchia - Protorculidae
"Turritella conica" = Atorcula canalifera
"Turritella conica" = Atorcula canalifera M√ľnster 1841 snail
 Stromboidea - Strombidae
"Rimella canalifera" = Rostellaria (Rimella) canalifera
"Rimella canalifera" = Rostellaria (Rimella) canalifera Gabb 1864 true conch
 Ficoidea - Ficidae
Ficopsis remondii Gabb 1864 fig shell
 Tonnoidea - Ranellidae
Tritonium eocenicum Weaver 1905 triton
Tritonium impressum Weaver 1905 triton
 Tonnoidea - Cassidae
"Cassidaria tuberculata" = Galeodea
"Cassidaria tuberculata" = Galeodea snail
"Megistostoma striata" = Bullaea gabbiana
"Megistostoma striata" = Bullaea gabbiana Stoliczka 1868