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, Jonathan Marcot, Mark Uhen and Austin Hendy

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Anthozoa
 Scleractinia - Turbinoliidae
Turbinolia dickersoni n. sp. Nomland 1916 stony coral
Turbinolia pusillanima Nomland 1916 stony coral
 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
Cephalopoda
 Nautilida - Aturiidae
Aturia sp.5 Bronn 1838 nautiloid
Gastropoda
 Trochoidea - Turbinidae
Homalopoma wattsi8 Dickerson 1916 snail
 Seguenzioidea - Chilodontaidae
Calliovarica eocensis n. sp.4 Vokes 1939 snail
 Vanikoroidea - Eulimidae
Melanella coalingana n. sp.8 Vokes 1939 snail
 Neotaenioglossa - Calyptraeidae
Calyptraea diegoana8 Conrad 1855 slipper shell
 Cerithioidea - Turritellidae
Turritella buwaldana8 Dickerson 1916 turret shell
subspecies crooki
Turritella andersoni n. sp.2 Dickerson 1916 turret shell
 Sorbeoconcha - Strombidae
"Rimella (Macilentos) macilenta" = Rimella macilenta8
"Rimella (Macilentos) macilenta" = Rimella macilenta8 White 1889 true conch
 Neogastropoda - Mitridae
Mitra simplicissima8 Cooper 1894 mitre shell
 Neogastropoda - Ancillariidae
Ancilla (Spirancilla) gabbi8 Cossman 1899 snail
 Neogastropoda - Buccinidae
Metula harrisi n. sp.2 Dickerson 1916 true whelk
 Neogastropoda - Fasciolariidae
Falsifusus marysvillensis8 Merriam and Turner 1937 snail
 Neogastropoda - Clavatulidae
"Fusiturricula (Crenaturricula) crenatospira" = Crenaturricula crenatospira8, "Turricula holwayi" = Surcula holwayi8
"Fusiturricula (Crenaturricula) crenatospira" = Crenaturricula crenatospira8 Cooper 1894 snail
"Turricula holwayi" = Surcula holwayi8 Dickerson 1913 snail
 Neogastropoda - Conidae
Conus hornii Gabb 1864 cone shell
 Neogastropoda - Terebridae
Terebra "n. sp."8 Bruguière 1789 auger snail
 Neogastropoda - Turridae
"Pleurofusia fresnoensis" = Pleurotoma fresnoensis8, Gemmula wattsi8, Eosurcula capayana n. sp.8
"Pleurofusia fresnoensis" = Pleurotoma fresnoensis8 Arnold 1909 turrid
Gemmula wattsi8 Anderson and Hanna 1925 turrid
Eosurcula capayana n. sp.8 Vokes 1939 turrid
 Neogastropoda - Ptychatractidae
Exilia taliaferroi1 Vokes 1939 snail
 Neogastropoda - Muricidae
? Muricopsis whitneyi8 Gabb 1864 murex snail
Pseudoperissolax blakei8 Conrad 1855 murex snail
new subspecies praeblakei
 Neogastropoda - Cancellariidae
"Cancellaria stantoni" = Bonellitia (Admetula) paucivaricata
"Cancellaria stantoni" = Bonellitia (Admetula) paucivaricata Gabb 1864 snail
 Sorbeoconcha - Ficidae
Ficopsis meganosensis8 Clark and Woodford 1927 fig shell
Ficopsis remondii Gabb 1864 fig shell
 Sorbeoconcha - Cassidae
Galeodea meganosensis7 Vokes 1939 snail
 Sorbeoconcha - Naticidae
Polinices (Euspira) nuciformis8, "Natica gesteri n. sp." = Polinices (Euspira) gesteri2, "Amaurellina hendoni" = Tejonia moragai8, Sinum obliquum8
Polinices (Euspira) nuciformis8 Gabb 1864 moon snail
"Natica gesteri n. sp." = Polinices (Euspira) gesteri2 Dickerson 1916 moon snail
"Amaurellina hendoni" = Tejonia moragai8 Stewart 1927 moon snail
Sinum obliquum8 Gabb 1864 moon snail
 Heterostropha - Acteonidae
Tornatellaea "n. sp."8 Conrad 1860 snail
Tornatellaea effingeri n. sp.8 Vokes 1939 snail
 Heterostropha - Pyramidellidae
 Opisthobranchia - Philinidae
Megistostoma gabbianum8 Stoliczka 1868 snail
Bivalvia
 Arcida - Parallelodontidae
Porterius woodfordi8 Hanna 1927 clam
 Arcida - Arcidae
"Arca hornii" = Pachecoa hornii2
"Arca hornii" = Pachecoa hornii2 Gabb 1864 clam
 Arcida - Glycymerididae
"Glycymeris sagittata" = Glycymeris (Glycymerita) sagittata8, "Glycimeris fresnoensis n. sp." = Glycymeris (Tucetona) fresnoensis2, "Glycymeris perrini" = Glycymeris (Tucetona) perrini8
"Glycymeris sagittata" = Glycymeris (Glycymerita) sagittata8 Gabb 1864 clam
"Glycimeris fresnoensis n. sp." = Glycymeris (Tucetona) fresnoensis2 Dickerson 1916 clam
"Glycymeris perrini" = Glycymeris (Tucetona) perrini8 Dickerson 1916 clam
subspecies instabilis
 Pectinida - Propeamussiidae
"Propeamussium mideocenicum n. sp." = Parvamussium mideocenicum8
"Propeamussium mideocenicum n. sp." = Parvamussium mideocenicum8 Vokes 1939 mud scallop
 Ostreida - Malleidae
? Vulsella clarki n. sp.8 Vokes 1939 oyster
 Mytilida - Mytilidae
Brachidontes cf. cowlitzensis8 Weaver and Palmer 1922 mussel
 Lucinida - Lucinidae
"? Lucina bramkampi n. sp." = Lucina (Lucina) bramkampi8
"? Lucina bramkampi n. sp." = Lucina (Lucina) bramkampi8 Vokes 1939 clam
 Poromyida - Cuspidariidae
Cardiomya "n. sp."8 Adams 1864 clam
 Pholadida - Corbulidae
"Corbula parilis" = Caryocorbula parilis2, "Corbula (Varicorbula) capayana n. sp." = Varicorbula capayana8, Corbula rosecanyonensis8
"Corbula parilis" = Caryocorbula parilis2 Gabb 1864 clam
"Corbula (Varicorbula) capayana n. sp." = Varicorbula capayana8 Vokes 1939 clam
Corbula rosecanyonensis8 Hanna 1927 clam
 Cardiida - Veneridae
"Isocardium tejonensis" = Nitidavenus tejonensis2, "? Marcia conradi n. sp." = Nitidavenus conradi2, "Macrocallista (Costacallista) domenginica" = Callista (Macrocallista) domenginica8, "Macrocallista (Costacallista) domenginica" = Callista (Macrocallista) domenginica8
"Isocardium tejonensis" = Nitidavenus tejonensis2 Waring 1914 venus clam
"? Marcia conradi n. sp." = Nitidavenus conradi2 Dickerson 1916 venus clam
"Macrocallista (Costacallista) domenginica" = Callista (Macrocallista) domenginica8 Vokes 1939 venus clam
subspecies new capayana
"Macrocallista (Costacallista) domenginica" = Callista (Macrocallista) domenginica8 Vokes 1939 venus clam
 Cardiida - Mactridae
"Spisula capayana n. sp." = Mactromeris capayana8
"Spisula capayana n. sp." = Mactromeris capayana8 Vokes 1939 clam
 Cardiida - Cardiidae
"Nemocardium linteum" = Nemocardium (Nemocardium) linteum8, "Cardium brewerii" = Schedocardia brewerii2
"Nemocardium linteum" = Nemocardium (Nemocardium) linteum8 Conrad 1855 cockle
"Cardium brewerii" = Schedocardia brewerii2 Gabb 1864 cockle
subspecies hartleyense
 Cardiida - Psammobiidae
"Gari hornii" = Gari (Gobraeus) hornii8
"Gari hornii" = Gari (Gobraeus) hornii8 Gabb 1864 clam
subspecies umpquaensis
 Carditida - Carditidae
Venericardia (Pacificor) hornii3 Gabb 1864 clam
subsp. hornii
 Carditida - Crassatellidae
"Crassatellites lillisi n. sp." = Crassatella lillisi2
"Crassatellites lillisi n. sp." = Crassatella lillisi2 Dickerson 1916 clam
 Nuculida - Nuculidae
"Acila (Truncacila) decisa" = Acila (Truncacila) decisa8, "Acila gabbiana n. sp." = Acila (Truncacila) decisa2, "Nucula cooperi" = Nucula (Nucula) cooperi8
"Acila (Truncacila) decisa" = Acila (Truncacila) decisa8 Conrad 1855 divaricate nutclam
"Acila gabbiana n. sp." = Acila (Truncacila) decisa2 Conrad 1855 divaricate nutclam
"Nucula cooperi" = Nucula (Nucula) cooperi8 Dickerson 1913 nut clam
 Nuculanida - Nuculanidae
Nuculana (Saccella) hondana n. sp.8, "Leda fresnoensis n. sp." = Ledina fresnoensis2, "Jupiteria (Ledina) duttonae" = Ledina duttonae6
Nuculana (Saccella) hondana n. sp.8 Vokes 1939 pointed nut clam
"Leda fresnoensis n. sp." = Ledina fresnoensis2 Dickerson 1916 pointed nut clam
"Jupiteria (Ledina) duttonae" = Ledina duttonae6 Vokes 1939 pointed nut clam
Scaphopoda
 Gadilida - Gadilidae
? Cadulus "n. sp."8 Philippi 1844 tusk shell
 Dentaliida - Dentaliidae
Dentalium (Laevidentalium) lighti n. sp.8 Vokes 1939 tusk shell
Malacostraca
 Decapoda - Cancridae
? Cancer sp.2 Linnaeus 1758 crab