CAS Loc. 27249, Isla Baltra (Pliocene of Ecuador)

Where: Ecuador (0.4° S, 90.3° W: paleocoordinates 0.7° S, 92.2° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Pliocene (5.3 - 2.6 Ma)

• STRATIGRAPHIC RELATIONS: From unnamed lithostratigraphic unit, for which stratigraphic relationships are not discussed. AGE: Pliocene. STRATIGRAPHIC POSITION: White and yellowish tuffaceous strata interbedded

•with lava.

• bed-level stratigraphic resolution

Environment/lithology: marine; poorly lithified, tuffaceous, white, yellow siliciclastic sediments

• SPECIFIC LITHOLOGY: White and yellowish tuffaceous strata interbedded with lava. LITHIFICATION: Poorly-lithified, based on figured specimens.

Size class: macrofossils

Collected by Hertlein in 1932; reposited in the CAS

Collection methods: bulk, surface (in situ), sieve,

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

Primary reference: L. G. Hertlein. 1972. Pliocene fossils from Baltra (South Seymour) Island, Galápagos Islands. Proceedings of the California Academy of Sciences 39(3):25-46 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 96596: authorized by Austin Hendy, entered by Austin Hendy on 13.06.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for molluscs. NOMENCLATURE: Authoritative publication, with somewhat antiquated nomenclature, and species-resolution identifications.
unclassified
  -
Gastropoda
 Trochoidea - Turbinidae
Turbo vermiculosus Dall and Oschner 1928 snail
Turbo agonistes Dall and Oschner 1928 snail
 Trochoidea - Tegulidae
Tegula forbesi Dall and Oschner 1928 snail
 Lepetellida - Fissurellidae
 Vanikoroidea - Eulimidae
 Cerithioidea - Cerithiidae
Cerithium adustum cerith snail
 Cerithioidea - Litiopidae
Alaba supralirata Carpenter 1857 snail
 Cerithioidea - Turritellidae
"Turritella broderipiana" = Turritella (Broderiptella) broderipiana d'Orbigny 1840 turret shell
SUBSPECIES: Turritella broderipiana marmorata
 Cerithioidea - Modulidae
 Neogastropoda - Olividae
Oliva sp. Bruguière 1789 olive snail
 Neogastropoda - Buccinidae
 Neogastropoda - Nassariidae
Nassarius nodicinctus Adams 1852 snail
 Neogastropoda - Fasciolariidae
 Neogastropoda - Columbellidae
"Strombina gibberula" = Sincola (Dorsina) gibberula Sowerby 1832 snail
 Neogastropoda - Conidae
Conus fergusoni Sowerby 1875 cone shell
 Neogastropoda - Mangeliidae
Mangelia cf. hancocki Hertlein and Strong 1939 snail
 Neogastropoda - Marginellidae
Volvarina taeniolata Mörch 1860 margin shell
Granula cf. minor margin shell
Granula cf. polita margin shell
Granula sp. Jousseaume 1875 margin shell
 Neogastropoda - Cystiscidae
 Neogastropoda - Cancellariidae
"Cancellaria cf. ovata" = Cancellaria (Cancellaria) ovata
"Cancellaria cf. ovata" = Cancellaria (Cancellaria) ovata Sowerby 1832 snail
 Sorbeoconcha - Triviidae
"Trivia pacifica" = Niveria (Niveria) pacifica, "Trivia radians" = Pusula radians
"Trivia pacifica" = Niveria (Niveria) pacifica Gray 1832 snail
"Trivia radians" = Pusula radians Lamarck 1810 snail
 Sorbeoconcha - Cypraeidae
"Cypraea nigropunctata" = Pseudozonaria nigropunctata
"Cypraea nigropunctata" = Pseudozonaria nigropunctata Gray 1828 cowry
 Sorbeoconcha - Eratoidae
"Erato (Hespererato) marginata" = Hespererato (Hespererato) marginata
"Erato (Hespererato) marginata" = Hespererato (Hespererato) marginata Morch 1860 snail
SUBSPECIES: Erato (Hespererato) marginata galapagensis
 Sorbeoconcha - Littorinidae
 Sorbeoconcha - Naticidae
Polinices dubius Récluz 1843 moon snail
Polinices uber Valenciennes 1821 moon snail
 Sorbeoconcha - Rissoidae
 Sorbeoconcha - Barleeiidae
"Amphithalmus trosti" = Amphithalamus
"Amphithalmus trosti" = Amphithalamus snail
 Sorbeoconcha - Cerithiopsidae
 Sorbeoconcha - Triphoridae
 Sorbeoconcha - Hipponicidae
Hipponix pilosus hoof shell
 Heterostropha - Pyramidellidae
Iselica cf. kochi, "Odostomia (Miralda) galapagensis" = Miralda, "Odostomia (Chrysallida) rinella" = Chrysallida, Odostomia (Menestho) aequisculpta, Pyramidella (Triptychus) cf. olssoni, Pyramidella (Voluspa) sp., "Turbonilla (Chemnitzia) houseri" = Chemnitzia
"Odostomia (Miralda) galapagensis" = Miralda snail
"Odostomia (Chrysallida) rinella" = Chrysallida snail
Pyramidella (Voluspa) sp. Lamarck 1799 snail
"Turbonilla (Chemnitzia) houseri" = Chemnitzia snail
 Heterostropha - Ellobiidae
 Stylommatophora - Gastrocoptidae
 Opisthobranchia - Bullidae
Bulla punctulata Adams 1850 snail
 Opisthobranchia - Cylichnidae
Acteocina infrequens Adams 1852 barrel-bubble
 Neritoidea - Neritidae
Nerita oligopleura Dall and Oschner 1928 snail
Bivalvia
 Arcida - Noetiidae
"Arca (Arcopsis) solida" = Arcopsis solida
"Arca (Arcopsis) solida" = Arcopsis solida Sowerby I 1833 clam
 Arcida - Arcidae
Barbatia reeveana d'Orbigny 1846 clam
 Arcida - Glycymerididae
Glycymeris maculata Broderip 1832 clam
 Pectinida - Anomiidae
Anomia peruviana d'Orbigny 1846 jingle
 Pectinida - Pectinoidae
Argopecten ventricosus Sowerby 1842 calico scallop
Pecten (Pecten) slevini Dall and Oschner 1928 scallop
"Chlamys (Nodipecten) magnifica" = Nodipecten magnificus Sowerby 1835 scallop
 Ostreida - Pinnidae
 Ostreida - Ostreidae
"Ostrea megodon" = Undulostrea megodon, Ostrea sp.
"Ostrea megodon" = Undulostrea megodon Hanley 1846 oyster
Ostrea sp. Linnaeus 1758 oyster
 Mytilida - Mytilidae
Modiolus capax Conrad 1837 mussel
 Lucinida - Lucinidae
Ctena galapagana Dall 1901 clam
 Cardiida - Veneridae
Megapitaria cf. aurantiaca Sowerby 1831 venus clam
Chione undatella Sowerby I 1835 venus clam
Protothaca (Tropithaca) cf. seymourensis Dall and Oschner 1928 venus clam
"Protothaca (Tropithaca) grata" = Leukoma grata Say 1831 venus clam
"Nioche cf. zorritensis" = Leukoma metodon Pilsbry and Lowe 1932 venus clam
 Cardiida - Ungulinidae
Diplodonta subquadrata Carpenter 1855 clam
SUBSPECIES: Diplodonta subquadrata baltrana n. subsp.
 Cardiida - Cardiidae
"Cardium elenense" = Laevicardium substriatum
"Cardium elenense" = Laevicardium substriatum Conrad 1837 cockle
 Cardiida - Solecurtidae
Tagelus sp. Gray 1847 clam
 Cardiida - Tellinidae
"Florimetis cognata" = Psammotreta (Leporimetis) cognata
"Florimetis cognata" = Psammotreta (Leporimetis) cognata Pilsbry and Vanatta 1902 tellin clam
 Cardiida - Semelidae
Cumingia cf. lamellosa Sowerby 1833 clam
Echinoidea
 Clypeasteroida - Mellitidae
Encope micropora Agassiz 1841 sand dollar