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 190778: authorized by Patricia Holroyd, entered by Patricia Holroyd on 17.12.2017, edited by Austin Hendy
Creative Commons license: CC BY (attribution)
Taxonomic list
Anthozoa | |
"Flabellum remondianum" = Flabellum cuneiforme
"Flabellum remondianum" = Flabellum cuneiforme Lonsdale 1845 stony coral | |
Echinoidea | |
| |
Bivalvia | |
"Nucula (Acila) sp." = Acila
"Nucula (Acila) sp." = Acila Adams and Adams 1858 divaricate nutclam | |
"Leda milleri" = Nuculana (Saccella) denominata, "Leda gabbi" = Nuculana (Saccella) gabbii
"Leda milleri" = Nuculana (Saccella) denominata Hanna 1924 pointed nut clam
"Leda gabbi" = Nuculana (Saccella) gabbii Conrad 1866 pointed nut clam | |
"Modiolus bakeri" = Idasola bakeri Dickerson 1914 mussel
Modiolus ornatus Gabb 1864 mussel
"Mytilus cf. ascia" = Mytilus (Mytilus) ascia Gabb 1864 mussel | |
"Lima cf. multiradiata" = Acesta (Acesta) multiradiata
"Lima cf. multiradiata" = Acesta (Acesta) multiradiata Gabb 1869 file clam | |
| |
Ostrea sp. Linnaeus 1758 oyster | |
Cucullaea mathewsonii Gabb 1864 clam | |
Glycymerita major Stanton 1896 clam | |
"Cuspidaria dolabraeformis" = Cardiomya dolabraeformis
"Cuspidaria dolabraeformis" = Cardiomya dolabraeformis Gabb 1864 clam | |
Pholadomya nasuta Gabb 1864 clam | |
Corbula sp. Bruguière 1789 clam | |
Teredo sp. Linnaeus 1758 clam | |
? Zirphaea sp. Gray 1840 clam | |
Tellina cf. aequalis, "Tellina undulifera" = Tellina (Saulella) undulifera
Tellina cf. aequalis Gabb 1869 tellin clam
"Tellina undulifera" = Tellina (Saulella) undulifera Gabb 1869 tellin clam | |
Cardium sp. Linnaeus 1758 cockle | |
"Spisula weaveri n. sp." = Mactromeris weaveri
"Spisula weaveri n. sp." = Mactromeris weaveri Dickerson 1914 clam | |
? Paphia clarki Dickerson 1914 venus clam
"? Tapes quadrata" = Pitar quadratus Gabb 1864 venus clam
Meretrix stantoni Dickerson 1914 venus clam | |
"Cardita veneriformis" = Centrocardita veneriformis
"Cardita veneriformis" = Centrocardita veneriformis Gabb 1864 clam | |
Gastropoda | |
"Cylichna costata" = Scaphander (Mirascapha) costatus
"Cylichna costata" = Scaphander (Mirascapha) costatus Gabb 1864 snail | |
Turritella infragranulata Gabb 1864 turret shell
Turritella pachecoensis Stanton 1896 turret shell | |
Tritonium martinezensis n. sp.
Tritonium martinezensis n. sp. Dickerson 1914 triton | |
"Neptunea mucronata" = Sycum mucronatum
"Neptunea mucronata" = Sycum mucronatum Gabb 1869 snail | |
? Fusus sp. Bruguière 1789 snail
Fusus sp. Bruguière 1789 snail | |
"Perissolax tricarnatus" = Pseudoperissolax tricarnatus
"Perissolax tricarnatus" = Pseudoperissolax tricarnatus Weaver 1905 murex snail | |
"Heteroterma striata" = Pyropsis striata
"Heteroterma striata" = Pyropsis striata Stanton 1896 snail | |
Urosyca caudata Gabb 1869 fig shell | |
Xenophora zitteli Weaver 1905 carrier shell | |
"Lunatia hornii" = Polinices hornii Gabb 1864 moon snail
Natica "sp. a" Scopoli 1777 moon snail
Lacunaria striata Gabb 1869 moon snail | |
Ampullina striata Gabb 1869 snail | |
Scaphopoda | |
Dentalium sp. Linnaeus 1758 tusk shell
Dentalium cooperi Gabb 1864 tusk shell | |
Rhynchonellata | |
? Terebratula sp. Müller 1776 |