Crassispira promensisCrassispira promensis 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 Miocene strata in Myanmar, age range: 23.03 to 20.43 Ma