Crassispira perrugataCrassispira perrugata 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 29.5 mm, its diameter 9.5 mm.DistributionFossils have been found in Quaternary strata in Florida and North Carolina, United States; age range: 2.588 to 0.781 Ma