Molluscan assemblages, Aldabra Atoll, Aldabra Limestone 7 (Pleistocene of Seychelles)

Also known as Reef 3806

Where: Seychelles (9.4° S, 46.4° E: paleocoordinates 9.4° S, 46.5° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Aldabra Limestone Formation, Late/Upper Pleistocene (0.1 - 0.0 Ma)

• 125 000 years (Thompson and Walton 1972)

Environment/lithology: perireef or subreef; limestone

• intertidal, or shallow sublittoral, marine grass and open sandy habitats
• facies 7: Polynices-Fragum facies; 10-15 cm thick hard, well-cemented calcarenite, with coral fragments, Halimeda segments and Marginopora, molluscs are common and well preserved

Size class: macrofossils

Collected in 1969; reposited in the BMNH

• June-September 1969, small additional quantity in 1973 m, altogether 300 specimens found in Aldabra Limestone

Primary reference: J. D. Taylor. 1978. Faunal response to the instability of reef habitats: Pleistocene molluscan assemblages of Aldabra Atoll. Palaeontology 21(1):1-30 [W. Kiessling/A. Girndt]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 81013: authorized by Wolfgang Kiessling, entered by Antje Girndt on 26.05.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

 Cardiida -
Scissulina dispar Conrad 1837 clam
 Cardiida - Tellinidae
Jactellina clathrata Deshayes 1835 tellin clam
 Cardiida - Cardiidae
Fragum fragum Linnaeus 1758 cockle
 Lucinida - Lucinidae
Ctena sp. Mörch 1860 clam
Codakia sp. Scopoli 1777 clam
 Cephalaspidea - Bullidae
Bulla sp. Linnaeus 1758 snail
 Neogastropoda - Nassariidae
Nassarius pullus Linnaeus 1758 snail
Nassarius albescens Dunker 1846 snail
 Stromboidea - Strombidae
"Strombus gibberulus" = Strombus (Gibberulus) gibberulus
"Strombus gibberulus" = Strombus (Gibberulus) gibberulus Linnaeus 1758 conch
 Naticoidea - Naticidae
"Polynices tumidus" = Polinices
"Polynices tumidus" = Polinices moon snail
 Sorbeoconcha - Cerithiidae
Rhinoclavis asper cerith snail
 Turbinoidea - Phasianellidae
Phasianella sp. Lamarck 1804 snail
 Trochoidea - Trochidae
Cantharidus sp. Monfort 1810 top snail
"Tectus mauritianus" = Tectus (Tectus) mauritianus Gmelin 1791 top snail
 Caulerpales - Halimedaceae
Halimeda sp. Lamouroux 1812
 Miliolida - Soritidae