Notes on the Fauna of the Chipola Formation- XVIII Some New or Otherwise Interesting Members of the Calyptraeidae (Mollusca: Gastropoda)

Abstract

Although Gardner (1947) lists several species of Calyptraeidae from all three members of the Alum Bluff Group, some very interesting forms were not known to her. Present work has revealed three species of Trochita Schumacher, 1817 (type species: Trochita spiralis Schumacher= Turbo trochiformis Born), a group not found in the western Atlantic today.