UCMP 1540, Stewartville (Paleocene of the United States)

Where: Contra Costa County, California (37.9° N, 121.9° W: paleocoordinates 42.4° N, 101.2° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Turritella infragranulata pachecoensis other zone, Selandian (61.6 - 59.2 Ma)

• Upper middle Paleocene (Selandian) = Turritella infragranulata pachecoensis Zone. “Martinez” Formation, lower member

Environment/lithology: marine; lithified sandstone

Size class: macrofossils

Collected by R.E. Dickerson in 1912; reposited in the UCMP

Primary reference: R. L. Squires and L. R. Saul. 2007. Paleocene pareorine turritellid gastropods from the Pacific slope of North America. The Nautilus 121(1):1-16 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 184016: authorized by Matthew Clapham, entered by Vanessa Maciel on 25.01.2017, edited by Patricia Holroyd

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Arcida - Glycymerididae
"Glycimeris veatchii" = Axinaea veatchii
"Glycimeris veatchii" = Axinaea veatchii Gabb 1864 clam
 Arcida - Cucullaeidae
Cucullaea mathewsonii Gabb 1864 clam
 Pectinida - Limidae
"Lima haseltinei" = Acesta (Plicacesta) haseltinei
"Lima haseltinei" = Acesta (Plicacesta) haseltinei Dickerson 1914 file clam
 Carditida - Crassatellidae
"Crassatellites unioides" = Crassatella clam
Crassatellites grandis Gabb 1864 clam
Crassatellites studleyi Dickerson 1914 clam
 Pholadida - Teredinidae
Teredo sp. Linnaeus 1758 clam
 Cardiida - Veneridae
? Tapes quadrata venus clam
Paphia cf. clarki Dickerson 1914 venus clam
Meretrix sp. Lamarck 1799 venus clam
 Cardiida - Tellinidae
"Tellina undulifera" = Saulella undulifera
"Tellina undulifera" = Saulella undulifera Gabb 1869 tellin clam
 Cardiida - Cardiidae
"Cardium cooperi" = Nemocardium (Nemocardium) linteum Conrad 1855 cockle
 Pholadomyida - Pholadomyidae
Pholadomya nasuta Gabb 1864 clam
Gastropoda
 Opisthobranchia - Cylichnidae
"Cylichna costata" = Scaphander costatus
"Cylichna costata" = Scaphander costatus Gabb 1864 snail
 Neogastropoda - Buccinidae
"Brachysphingus liratus" = Brachysphingus sinuatus, ? Siphonalia lineata
"Brachysphingus liratus" = Brachysphingus sinuatus Gabb 1869 true whelk
 Neogastropoda - Fasciolariidae
"Neptunea mucronata" = Fasciolaria mucronata
"Neptunea mucronata" = Fasciolaria mucronata Gabb 1868 tulip snail
 Neogastropoda - Tudiclidae
Heteroterma gabbi Stanton 1896 snail
 Neogastropoda - Turridae
"Surcula sp." = Turricula, Surcula fairbanksi n. sp., Surcula merriami, Turris louderbacki n. sp., "Fusus mathewsonii" = Surculites mathewsonii
"Surcula sp." = Turricula Schumacher 1817 turrid
Surcula fairbanksi n. sp. Dickerson 1914 turrid
Surcula merriami Dickerson 1914 turrid
Turris louderbacki n. sp. Dickerson 1914 turrid
"Fusus mathewsonii" = Surculites mathewsonii Gabb 1864 turrid
 Stromboidea - Strombidae
"Fusus sp." = Rostellaria (Fusus)
"Fusus sp." = Rostellaria (Fusus) Bruguière 1789 true conch
 Stromboidea - Aporrhaidae
Anchura gabbi n. sp. Dickerson 1914 snail
 Ficoidea - Ficidae
"Urosyca caudata" = Priscoficus caudatus Gabb 1869 fig shell
Perissolax tricarnatus Weaver 1905 fig shell
Ficopsis sp. Conrad 1866 fig shell
 Naticoidea - Naticidae
"Lunatia hornii" = Polinices (Euspira) hornii Gabb 1864 moon snail
Amauropsis martinezensis n. sp. Dickerson 1914 moon snail
 Xenophoroidea - Xenophoridae
Xenophora zitteli Weaver 1905 carrier shell
 Sorbeoconcha - Turritellidae
"Turritella clarki n. sp." = Mesalia clarki, Turritella pachecoensis
"Turritella clarki n. sp." = Mesalia clarki Dickerson 1914 turret shell
Turritella pachecoensis Stanton 1896 turret shell
 Heterostropha - Acteonidae
"Ringinella pinguis" = Tornatellaea pinguis
"Ringinella pinguis" = Tornatellaea pinguis Gabb 1867 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