UCMP 1817, Urruttia Canyon-Salt Creek (Eocene of the United States)

Where: Fresno County, California (36.4° N, 120.4° W: paleocoordinates 39.0° N, 103.3° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Cerros Shale Member (Lodo Formation), Ypresian (56.0 - 47.8 Ma)

• Assigned to the "Arroyo Hondo" formation (lower part of the "Capay Stage") by Vokes (1939) and Miller & Downs (1950), but the Lodo Formation is now used for this unit. Calcareous nannofossils indicate the CP10 (Tribrachiatus orthostylus) zone of early Eocene age and the transition between the CP10-CP11 (Discoaster lodoensis) zones, according to Squires (1988).

• group of beds-level stratigraphic resolution

Environment/lithology: deep-water; lithified shale

• Foraminifera indicate bathyal depths for the lower part of the Lodo (Stinemeyer, 1974).

Size class: macrofossils

Reposited in the UCMP

Primary reference: J. O. Nomland. 1916. Corals from the Cretaceous and Tertiary of California and Oregon. Bulletin of the Department of Geology, University of California Publications 9(5):59-76 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 122294: authorized by Wolfgang Kiessling, entered by Uta Merkel on 21.12.2011, edited by Patricia Holroyd, Matthew Clapham and Mark Uhen

Creative Commons license: CC BY (attribution)

Taxonomic list

 Arcida - Arcidae
 Arcida - Glycymerididae
Glycymeris perrini5 clam
subspecies instabilis
Glycymeris sagittata5 Gabb 1864 clam
 Pectinida - Propeamussiidae
Propeamussium mideocenicum5 Vokes 1939 mud scallop
 Carditida - Carditidae
Megacardita sp.5, "Venericardia planicosta" = Venericor planicosta
Megacardita sp.5 Sacco 1899 clam
"Venericardia planicosta" = Venericor planicosta Lamarck 1801 clam
subsp. hornii
 Pholadida - Corbulidae
 Cardiida -
 Cardiida - Glossidae
"Nitidavenus tejonensis" = Isocardia tejonensis5
"Nitidavenus tejonensis" = Isocardia tejonensis5 Waring 1914 clam
 Cardiida - Mactridae
Spisula capayana n. sp.5 Vokes 1939 clam
 Cardiida - Veneridae
Nitidavenus conradi5, "Macrocallista (Costacallista) domenginica" = Callista (Macrocallista) domenginica5
"Macrocallista (Costacallista) domenginica" = Callista (Macrocallista) domenginica5 Vokes 1939 venus clam
subspecies new capayana
 Cardiida - Psammobiidae
"Gari hornii" = Gari (Gobraeus) hornii5
"Gari hornii" = Gari (Gobraeus) hornii5 Gabb 1864 clam
subspecies umpquaensis
 Cardiida - Cardiidae
"Nemocardium linteum" = Nemocardium (Nemocardium) linteum5, "Plagiocardium (Schedocardia) brewerii" = Acanthocardia (Schedocardia) brewerii5
"Nemocardium linteum" = Nemocardium (Nemocardium) linteum5 Conrad 1855 cockle
"Plagiocardium (Schedocardia) brewerii" = Acanthocardia (Schedocardia) brewerii5 Gabb 1864 cockle
subspecies hartleyense
 Poromyida - Cuspidariidae
Cardiomya "n. sp."5 Adams 1864 clam
 Lucinida - Lucinidae
? Lucina bramkampi n. sp.5 Vokes 1939 clam
 Nuculida - Nuculidae
Nucula cooperi5 Dickerson 1913 nut clam
Acila gabiana3 divaricate nutclam
Acila (Truncacila) decisa5 Conrad 1855 divaricate nutclam
 Protobranchia - Nuculanidae
Nuculana (Saccella) hondana n. sp.5 Vokes 1939 pointed nut clam
"Leda fresnoensis" = Ledina fresnoensis3 Dickerson 1916 pointed nut clam
Jupiteria (Ledina) duttonae3 Vokes 1939 pointed nut clam
 Neogastropoda -
Ancilla (Spirancilla) gabbi5 Cossman 1899 snail
 Neogastropoda - Buccinidae
Metula harrisi3, "Cumia harrisi" = Colubraria5
Metula harrisi3 Olsson 1922 true whelk
"Cumia harrisi" = Colubraria5 true whelk
 Neogastropoda - Fasciolariidae
 Neogastropoda - Cancellariidae
"Cancellaria stantoni" = Admete (Bonellitia) stantoni
"Cancellaria stantoni" = Admete (Bonellitia) stantoni Dickerson 1913 snail
 Neogastropoda - Mitridae
Mitra simplicissima5 Cooper 1894 mitre shell
 Neogastropoda - Tudiclidae
Pseudoperissolax blakei5 Conrad 1855 snail
new subspecies praeblakei
 Neogastropoda - Muricidae
 Neogastropoda - Ptychatractidae
 Neogastropoda - Turridae
"Fusiturricula (Crenaturricula) crenatospira" = Crenaturricula crenatospira5, Eosurcula capayana n. sp.5, "Pleurofusia fresnoensis" = Pleurotoma fresnoensis5, Gemmula wattsi5
"Fusiturricula (Crenaturricula) crenatospira" = Crenaturricula crenatospira5 Cooper 1894 turrid
Eosurcula capayana n. sp.5 Vokes 1939 turrid
"Pleurofusia fresnoensis" = Pleurotoma fresnoensis5 Arnold 1910 turrid
Gemmula wattsi5 Anderson and Hanna 1925 turrid
 Neogastropoda - Conidae
Conus hornii Gabb 1864 cone shell
 Neogastropoda - Terebridae
Terebra "n. sp."5 Bruguière 1789 auger snail
Terebra californica Gabb 1869 auger snail
 Stromboidea - Strombidae
"Rimella (Macilentos) macilenta" = Ectinochilus (Macilentos) macilenta5, "Rimella simplex" = Rimella supraplicata
"Rimella (Macilentos) macilenta" = Ectinochilus (Macilentos) macilenta5 White 1889 true conch
"Rimella simplex" = Rimella supraplicata Gabb 1864 true conch
 Ficoidea - Ficidae
Ficopsis remondii Gabb 1864 fig shell
Ficopsis meganosensis5 Clark and Woodford 1927 fig shell
 Vanikoroidea - Eulimidae
Melanella coalingana n. sp.5 Vokes 1939 snail
 Naticoidea - Naticidae
Sinum obliquum5 Gabb 1864 moon snail
Polinices (Euspira) nuciformis5 Gabb 1864 moon snail
Polinices (Polinices) gesteri5 Dickerson 1916 moon snail
"Amaurellina hendoni" = Tejonia hendoni5 Turner 1938 moon snail
 Calyptraeoidea - Calyptraeidae
Calyptraea diegoana5 Conrad 1857 slipper shell
 Tonnoidea - Cassidae
Galeodea meganosensis4 Vokes 1939 snail
 Sorbeoconcha - Turritellidae
Turritella andersoni Dickerson 1916 turret shell
Turritella andersoni n. sp.3 Dickerson 1916 turret shell
not named in 55842
Turritella buwaldana5 Dickerson 1916 turret shell
subspecies crooki
 Heterostropha - Acteonidae
Tornatellaea "n. sp."5 Conrad 1860 snail
 Pyramidelloidea - Pyramidellidae
 Turbinoidea - Turbinidae
Homalopoma wattsi5 Dickerson 1916 snail
 Seguenzioidea - Chilodontidae
Calliovarica eocensis n. sp.1 Vokes 1939 snail
 Dentaliida - Dentaliidae
Dentalium lighti n. sp.5 Vokes 1939 tusk shell
 Gadilida - Gadilidae
? Cadulus "n. sp."5 Philippi 1844 tusk shell
 Nautilida - Aturiidae
Aturia sp.2 Bronn 1838 nautiloid
 Scleractinia - Caryophylliidae
"? Flabellum merriami n. sp." = Platytrochus merriami, Trochocyathus imperialis n. sp.
"? Flabellum merriami n. sp." = Platytrochus merriami Nomland 1916 stony coral
Trochocyathus imperialis n. sp. Nomland 1916 stony coral
 Scleractinia - Turbinoliidae
Turbinolia dickersoni n. sp. Nomland 1916 stony coral
Turbinolia pusillanima Nomland 1916 stony coral
"Megistostoma gabbianum" = Bullaea gabbiana5
"Megistostoma gabbianum" = Bullaea gabbiana5 Stoliczka 1868