Pyrgocythara eminulaPyrgocythara eminula is an extinct species of sea snail, a marine gastropod mollusk in the family Mangeliidae.DescriptionThe shell of Pyrgocythara eminula is relatively small, with a length reaching up to 4.3 mm and a diameter of about 1.8 mm. The shell is likely elongate and turreted, consistent with the characteristics of the family Mangeliidae.DistributionFossils of this marine species were found in Pleistocene strata of Jamaica and St. Thomas; age range: 3.6 to 2.588 Ma