Cryoturris dianema is an extinct species of sea snail, a marine gastropod mollusk in the family Mangeliidae.
Description
The length of the shell attains 6.9 mm, its diameter 2.2 mm. ==Distribution==
Distribution
This extinct marine species occurs in Pliocene strata of the Bowden Formation, Jamaica; age range: 3.6 to 2.588 Ma. It was also found on the nordeastern continental platform of Brazil. ==References==