UCMP 1556 (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 190778: authorized by Patricia Holroyd, entered by Patricia Holroyd on 17.12.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Rhynchonellata
 Terebratulida - Terebratulidae
? Terebratula sp. Müller 1776
Bivalvia
 Arcida - Glycymerididae
"Glycimeris veatchii" = Axinaea veatchii
"Glycimeris veatchii" = Axinaea veatchii Gabb 1864 clam
 Arcida - Cucullaeidae
Cucullaea mathewsonii Gabb 1864 clam
 Pectinida - Pectinoidae
Pecten "sp. a" Müller 1776 scallop
 Pectinida - Limidae
"Lima cf. multiradiata" = Acesta (Acesta) multiradiata
"Lima cf. multiradiata" = Acesta (Acesta) multiradiata Gabb 1868 file clam
 Ostreida - Ostreidae
Ostrea sp. Linnaeus 1758 oyster
 Mytilida - Mytilidae
Mytilus cf. ascia Gabb 1864 mussel
Modiolus bakeri Dickerson 1914 mussel
Modiolus ornatus Gabb 1864 mussel
 Carditida - Carditidae
"Cardita veneriformis" = Glans (Centrocardita) veneriformis
"Cardita veneriformis" = Glans (Centrocardita) veneriformis Gabb 1864 clam
 Pholadida - Corbulidae
Corbula sp. Bruguière 1789 clam
 Pholadida - Teredinidae
Teredo sp. Linnaeus 1758 clam
 Cardiida - Mactridae
Spisula weaveri n. sp. Dickerson 1914 clam
 Cardiida - Veneridae
? Tapes quadrata Gabb 1864 venus clam
? Paphia clarki Dickerson 1914 venus clam
Meretrix stantoni Dickerson 1914 venus clam
 Cardiida - Tellinidae
"Tellina undulifera" = Saulella undulifera, Tellina cf. aequalis
"Tellina undulifera" = Saulella undulifera Gabb 1868 tellin clam
Tellina cf. aequalis Gabb 1868 tellin clam
 Cardiida - Cardiidae
Cardium sp. Linnaeus 1758 cockle
 Poromyida - Cuspidariidae
 Pholadomyida - Pholadomyidae
Pholadomya nasuta Gabb 1864 clam
 Nuculida - Nuculidae
"Nucula (Acila) sp." = Acila
"Nucula (Acila) sp." = Acila Adams and Adams 1858 divaricate nutclam
 Protobranchia - Nuculanidae
"Leda gabbi" = Nuculana (Saccella) gabbii Conrad 1869 pointed nut clam
Leda milleri Dickerson 1914 pointed nut clam
Gastropoda
 Opisthobranchia - Cylichnidae
"Cylichna costata" = Scaphander costatus
"Cylichna costata" = Scaphander costatus Gabb 1864 snail
 Architaenioglossa - Ampullinidae
Ampullina striata Gabb 1868 snail
 Neogastropoda - Fasciolariidae
"Neptunea mucronata" = Fasciolaria mucronata
"Neptunea mucronata" = Fasciolaria mucronata Gabb 1868 tulip snail
 Neogastropoda - Tudiclidae
Heteroterma striata Stanton 1896 snail
 Stromboidea - Strombidae
"? Fusus sp." = Rostellaria (Fusus), "Fusus sp." = Rostellaria (Fusus)
"? Fusus sp." = Rostellaria (Fusus) Bruguière 1789 true conch
"Fusus sp." = Rostellaria (Fusus) Bruguière 1789 true conch
 Ficoidea - Ficidae
"Urosyca caudata" = Priscoficus caudatus Gabb 1868 fig shell
Perissolax tricarnatus Weaver 1905 fig shell
 Naticoidea - Naticidae
Natica "sp. a", "Natica lineata" = Tanea lineata, "Lunatia hornii" = Polinices (Euspira) hornii
Natica "sp. a" Scopoli 1777 moon snail
"Natica lineata" = Tanea lineata Röding 1798 moon snail
"Lunatia hornii" = Polinices (Euspira) hornii Gabb 1864 moon snail
 Xenophoroidea - Xenophoridae
Xenophora zitteli Weaver 1905 carrier shell
 Tonnoidea - Ranellidae
Tritonium martinezensis n. sp. Dickerson 1914 triton
 Sorbeoconcha - Turritellidae
Turritella pachecoensis Stanton 1896 turret shell
Turritella infragranulata Gabb 1864 turret shell
Scaphopoda
 Dentaliida - Dentaliidae
Dentalium sp. Linnaeus 1758 tusk shell
Dentalium cooperi Gabb 1864 tusk shell
Echinoidea
 Cidaroida - Cidaridae
Cidaris sp. Leske 1778 pencil urchin
sp. a and sp. d
Anthozoa
 Scleractinia - Flabellidae
"Flabellum remondianum" = Flabellum cuneiforme
"Flabellum remondianum" = Flabellum cuneiforme Lonsdale 1845 stony coral
Zirphaea
  -
? Zirphaea sp. Gray 1840