CAS Loc. 27250, South Seymour Island (Pleistocene of Ecuador)

Where: Ecuador (0.4° S, 90.3° W: paleocoordinates 0.4° S, 90.3° 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: Sandstone beds about 1.5 m thick.

• bed-level stratigraphic resolution

Environment/lithology: marine; unlithified, red sandstone

• SPECIFIC LITHOLOGY: Reddish sandstone. LITHIFICATION: Unlithified, based on figured specimens

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 96866: authorized by Austin Hendy, entered by Austin Hendy on 05.07.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for molluscs. NOMENCLATURE: Authoritative publication, with somewhat antiquated nomenclature, and species-resolution identifications.
Bivalvia
 Arcida - Arcidae
"Arca gradata" = Barbatia (Acar) gradata, "Arca reeveana" = Barbatia (Cucullaearca) reeveana
"Arca gradata" = Barbatia (Acar) gradata Broderip and Sowerby 1829 miniature ark
"Arca reeveana" = Barbatia (Cucullaearca) reeveana d'Orbigny 1846 clam
 Cardiida - Chamidae
Chama sp. Linnaeus 1758 jewel box
 Lucinida - Lucinidae
"Codakia galapagana" = Ctena galapagana
"Codakia galapagana" = Ctena galapagana Dall 1901 clam
Gastropoda
 Neogastropoda - Columbellidae
 Neogastropoda - Buccinidae
? Cantharus sp. Röding 1798 true whelk
Engina maura true whelk
Engina reeviana true whelk
 Neogastropoda - Cancellariidae
 Neogastropoda - Mitridae
 Neogastropoda - Marginellidae
 Neogastropoda - Muricidae
Thais patula murex snail
 Neogastropoda - Harpidae
 Neogastropoda - Mangeliidae
"Mangelia sp." = Cythara (Mangelia)
"Mangelia sp." = Cythara (Mangelia) Loven 1846 snail
 Vanikoroidea - Hipponicidae
Cheilea equestris Linnaeus 1758 hoof shell
Hipponix barbatus hoof shell
Hipponix grayanus hoof shell
Hipponix antiquatus Linnaeus 1767 hoof shell
 Velutinoidea - Triviidae
"Trivia pacifica" = Niveria (Niveria) pacifica, "Trivia cf. pulla" = Niveria (Cleotrivia) occidentalis
"Trivia pacifica" = Niveria (Niveria) pacifica Gray 1832 snail
"Trivia cf. pulla" = Niveria (Cleotrivia) occidentalis Schilder 1922 snail
 Cypraeoidea - Cypraeidae
"Cypraea nigropunctata" = Pseudozonaria nigropunctata
"Cypraea nigropunctata" = Pseudozonaria nigropunctata Gray 1828 cowry
 Calyptraeoidea - Calyptraeidae
"Crepidula aculeata" = Bostrycapulus aculeatus
"Crepidula aculeata" = Bostrycapulus aculeatus Gmelin 1791 slipper shell
 Rissooidea - Rissoidae
Alvania veleroana n. sp. snail
 Sorbeoconcha - Cerithiidae
Cerithium adustum cerith snail
 Fissurelloidea - Fissurellidae
Diodora inaequalis Sowerby 1835 snail
 Trochoidea - Tegulidae
Echinoidea
 Cidaroida - Cidaridae
Eucidaris thouarsii pencil urchin
SUBSPECIES: Eucidaris thouarsii galapagensis