CAS Loc. 27255, James Bay, Isla San Salvador (Pleistocene of Ecuador)

Where: Ecuador (0.2° S, 90.9° W: paleocoordinates 0.2° S, 90.8° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Late/Upper Pleistocene (0.1 - 0.0 Ma)

• STRATIGRAPHIC RELATIONS: From unnamed lithostratigraphic unit, for which stratigraphic relationships are not discussed. AGE: Late Pleistocene or Holocene. STRATIGRAPHIC POSITION: Raised beach, 5-10 m above sea level.

• bed-level stratigraphic resolution

Environment/lithology: marine; unlithified siliciclastic sediments

• SPECIFIC LITHOLOGY: Not stated, but presumably siliciclastic. LITHIFICATION: Unlithified, based on facies description.

Size class: macrofossils

Collected by Hertlein in 1932; reposited in the CAS

Collection methods: surface (in situ),

• COLLECTOR: L.G. Hertlein, 1932. REPOSITORY: CAS.

Primary reference: L. G. Hertlein. 1939. Marine Pleistocene mollusks from the Galapagos Islands. Proceedings of the California Academy of Sciences 23(24):367-380 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 96867: authorized by Austin Hendy, entered by Austin Hendy on 06.07.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for molluscs. NOMENCLATURE: Authoritative publication, with somewhat antiquated nomenclature, and species-resolution identifications.
unclassified
  -
Bivalvia
 Arcida - Arcidae
Acar sp., "Arca (Acar) gradata" = Barbatia (Acar) gradata, "Arca (Barbatia) reeveana" = Barbatia (Cucullaearca) reeveana
Acar sp. Gray 1857 miniature ark
"Arca (Acar) gradata" = Barbatia (Acar) gradata Broderip and Sowerby 1829 miniature ark
"Arca (Barbatia) reeveana" = Barbatia (Cucullaearca) reeveana d'Orbigny 1846 clam
 Arcida - Noetiidae
"Arca (Fossularca) solida" = Arcopsis solida
"Arca (Fossularca) solida" = Arcopsis solida Sowerby I 1833 clam
 Pectinida - Pectinoidae
"Pecten (Lyropecten) magnificus" = Nodipecten magnificus
"Pecten (Lyropecten) magnificus" = Nodipecten magnificus Sowerby 1835 scallop
 Pectinida - Limidae
"Lima pacifica" = Limaria pacifica
"Lima pacifica" = Limaria pacifica d'Orbigny 1846 file clam
 Ostreida - Gryphaeidae
"Ostrea fisheri" = Hyotissa hyotis
"Ostrea fisheri" = Hyotissa hyotis Linnaeus 1758 Honeycomb Oyster
 Ostreida - Malleidae
 Mytilida - Mytilidae
"Mytilus adamsianus" = Brachidontes adamsianus Dunker 1857 mussel
Lithophaga aristata Dillwyn 1817 mussel
 Carditida - Carditidae
"Venericardia megastropha" = Strophocardia megastropha
"Venericardia megastropha" = Strophocardia megastropha Gray 1825 clam
 Cardiida - Chamidae
Chama frondosa Broderip 1835 jewel box
 Cardiida - Veneridae
Chione undatella, "Antigona multicostata" = Periglypta multicostata, "Antigona isocardia" = Globivenus isocardia, Transennella galapagana
Chione undatella Sowerby I 1835 venus clam
"Antigona multicostata" = Periglypta multicostata Sowerby 1835 venus clam
"Antigona isocardia" = Globivenus isocardia Verrill 1870 venus clam
Transennella galapagana Hertlein 1939 venus clam
 Cardiida - Semelidae
"Semele punctata" = Semele (Semele) sowerbyi, "Semele rupium" = Semele (Elegantula) rupium
"Semele punctata" = Semele (Semele) sowerbyi Tryon 1869 clam
"Semele rupium" = Semele (Elegantula) rupium Sowerby 1833 clam
 Cardiida - Lasaeidae
Kellia suborbicularis Montague 1803 clam
 Lucinida - Lucinidae
"Codakia galapagana" = Ctena galapagana
"Codakia galapagana" = Ctena galapagana Dall 1901 clam
Gastropoda
 Ptenoglossa - Epitoniidae
Epitonium sp. Bolten 1798 wentletrap
 Patellogastropoda - Lottiidae
Acmaea sp. Eschscholtz 1830 limpet
 Notaspidea - Pleurobranchidae
Pleurobranchus sp. Cuvier 1804 snail
 Triphoroidea - Triphoridae
 Triphoroidea - Cerithiopsidae
 Neogastropoda - Olividae
Olivella gracilis Broderip and Sowerby 1829 olive snail
 Neogastropoda - Columbellidae
Anachis sp. Adams and Adams 1853 snail
 Neogastropoda - Buccinidae
 Neogastropoda - Nassariidae
 Neogastropoda - Fasciolariidae
 Neogastropoda - Cancellariidae
 Neogastropoda - Mitridae
Mitra funiculata mitre shell
Mitra cf. lens mitre shell
Mitra solitaria mitre shell
Mitra sp. Lamarck 1798 mitre shell
 Neogastropoda - Marginellidae
"Marginella minor" = Volvarina taeniata Sowerby 1846 margin shell
 Neogastropoda - Muricidae
Thais callaoensis murex snail
Thais crassa murex snail
Thais patula murex snail
Thais planospira murex snail
"Tritonalia parva" = Purpura (Tritonalia) murex snail
Aspella erosa murex snail
Aspella pyramidalis murex snail
Phyllonotus regius murex snail
Muricopsis dubia murex snail
 Neogastropoda - Harpidae
 Neogastropoda - Mangeliidae
"Mangelia sp." = Cythara (Mangelia) Loven 1846 snail
Mangelia hancocki Hertlein and Strong 1939 snail
 Neogastropoda - Turridae
Turridae indet. Swainson 1840 turrid
 Neogastropoda - Raphitomidae
Daphnella sp. Hinds 1844 snail
 Neogastropoda - Conidae
Conus brunneus cone shell
Conus nux cone shell
Conus purpurascens cone shell
Conus tiarattis cone shell
 Neogastropoda - Terebridae
Terebra strigata auger snail
Terebra sp. Bruguière 1789 auger snail
 Littorinoidea - Littorinidae
 Vanikoroidea - Hipponicidae
Cheilea equestris Linnaeus 1758 hoof shell
Hipponix barbatus hoof shell
 Vanikoroidea - Eulimidae
 Velutinoidea - Triviidae
"Trivia galapagensis" = Pusula (Pusula) galapagensis, "Trivia pacifica" = Niveria (Niveria) pacifica, "Erato marginata" = Hespererato (Hespererato) marginata
"Trivia galapagensis" = Pusula (Pusula) galapagensis Melvill 1900 snail
"Trivia pacifica" = Niveria (Niveria) pacifica Gray 1832 snail
"Erato marginata" = Hespererato (Hespererato) marginata Morch 1860 snail
SUBSPECIES: Erato marginata galapagensis
 Naticoidea - Naticidae
Polinices uber Valenciennes 1821 moon snail
 Cypraeoidea - Cypraeidae
"Cypraea nigropunctata" = Pseudozonaria nigropunctata
"Cypraea nigropunctata" = Pseudozonaria nigropunctata Gray 1828 cowry
 Vermetoidea - Vermetidae
Aletes squamigerus Carpenter 1857 worm shell
 Calyptraeoidea - Calyptraeidae
Crepidula arenata slipper shell
"Crepidula aculeata" = Bostrycapulus aculeatus Gmelin 1791 slipper shell
 Tonnoidea - Ranellidae
"Cymatium wiegmanni" = Monoplex wiegmanni
"Cymatium wiegmanni" = Monoplex wiegmanni Anton 1839 triton shell
 Tonnoidea - Cassidae
Cypraecassis tenuis Wood 1828 snail
 Rissooidea - Rissoidae
Alvania veleronis Hertlein and Strong 1939 snail
 Sorbeoconcha - Litiopidae
 Sorbeoconcha - Planaxidae
Fossarus sp. Philippi 1841 snail
 Sorbeoconcha - Turritellidae
 Sorbeoconcha - Cerithiidae
Cerithium adustum cerith snail
Cerithium uncinatum cerith snail
 Sorbeoconcha - Modulidae
 Pulmonata - Ellobiidae
 Pulmonata - Trimusculidae
"Gadinia peruviana" = Trimusculus
"Gadinia peruviana" = Trimusculus button snail
 Basommatophora - Siphonariidae
 Pyramidelloidea - Pyramidellidae
"Odostomia (Chrysallida) paupercula" = Chrysallida, "Turbonilla (Strioturbonilla) sp." = Strioturbonilla, Odostomia (Ividella) orariana, Odostomia sp., Odostomia (Miralda) incantata
"Odostomia (Chrysallida) paupercula" = Chrysallida snail
"Turbonilla (Strioturbonilla) sp." = Strioturbonilla Sacco 1892 snail
Odostomia sp. Fleming 1817 snail
Odostomia (Miralda) incantata Hertlein and Strong 1939 snail
 Architectonicoidea - Architectonicidae
"Heliacus cf. planispira" = Heliacus (Astronacus) planispira
"Heliacus cf. planispira" = Heliacus (Astronacus) planispira Pilsbry and Lowe 1932 snail
 Turbinoidea - Phasianellidae
"Phasianella (Tricolia) perforata" = Tricolia
"Phasianella (Tricolia) perforata" = Tricolia snail
 Fissurelloidea - Fissurellidae
Diodora inaequalis Sowerby 1835 snail
 Trochoidea - Trochidae
Calliostoma sp. Swainson 1840 top snail
 Trochoidea - Tegulidae