Crassispira ponidaCrassispira ponida is an extinct species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae, the turrids and allies.DescriptionThe length of the shell attains 24.6 mm; its diameter 8.3 mm.DistributionFossils have been found in Pliocene strata of the Bowden Formation of Jamaica; also on Saint Thomas; age range: 3.6 to 2.588 Ma