UCMP 1547 (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 190777: authorized by Patricia Holroyd, entered by Patricia Holroyd on 17.12.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Arcida - Cucullaeidae
Cucullaea mathewsonii Gabb 1864 clam
 Ostreida - Pinnidae
Pinna barrowsi Dickerson 1914 oyster
 Carditida - Crassatellidae
Crassatellites claytonensis Dickerson 1914 clam
 Cardiida - Cardiidae
"Cardium cooperi" = Nemocardium (Nemocardium) linteum Conrad 1855 cockle
 Poromyida - Cuspidariidae
Cuspidaria hannibali n. sp. Dickerson 1914 clam
 Pholadomyida - Pholadomyidae
Pholadomya nasuta Gabb 1864 clam
 Protobranchia - Nuculanidae
"Leda gabbi" = Nuculana (Saccella) gabbii Conrad 1869 pointed nut clam
Gastropoda
 Opisthobranchia - Cylichnidae
"Cylichna costata" = Scaphander costatus
"Cylichna costata" = Scaphander costatus Gabb 1864 snail
 Neogastropoda - Turridae
Surcula merriami Dickerson 1914 turrid
 Ficoidea - Ficidae
"Urosyca caudata" = Priscoficus caudatus
"Urosyca caudata" = Priscoficus caudatus Gabb 1868 fig shell
 Naticoidea - Naticidae
"Lunatia hornii" = Polinices (Euspira) hornii
"Lunatia hornii" = Polinices (Euspira) hornii Gabb 1864 moon snail
 Heterostropha - Acteonidae
"Ringinella pinguis" = Tornatellaea pinguis
"Ringinella pinguis" = Tornatellaea pinguis Gabb 1864 snail
 Vetigastropoda - Discohelicidae
Discohelix californicus Weaver 1905 snail
Scaphopoda
 Dentaliida - Dentaliidae
Dentalium cooperi Gabb 1864 tusk shell
Anthozoa
 Scleractinia - Guyniidae
"Trochocyathus zitteli" = Palaeopsammia zitteli
"Trochocyathus zitteli" = Palaeopsammia zitteli Vaughan 1900 stony coral
 Scleractinia - Flabellidae
"Flabellum remondianum" = Flabellum cuneiforme
"Flabellum remondianum" = Flabellum cuneiforme Lonsdale 1845 stony coral