Mollusca from boring "Allicance-28"in Surinam (Dutch Guiana)

Abstract

Molluscan remains have been studied from depths of 12.25, 15.00 and, 16.25 m and from sixteen levels from depths between 258.85 and 311.00 m. The fauna of the first series of samples agrees with the Recent fauna of the Surinam coast and seems to have lived at moderate depth, say about ten fathoms, off the coast in and on a muddy clay bottom with occasional sand bars, but without hard rock. The fauna of the second series is supposed to be of Palaeocene age on the base of the associated Foraminifera. The molluscan remains consist mainly of fragments and young specimens, for the greater part of oysters. These remains are too poor for specific identification. About ten families or genera can be recognised, among which Vulselta is remarkable. This genus, which is rare in the Tertiaries of the New World, is represented by several hinge fragments.