† Kurtziella (Cryoturris) etrema Woodring 1928 Cryoturris etrema is an extinct species of sea snail, a marine gastropod mollusk in the family Mangeliidae.

[1] The length of the shell attains 8.5 mm, its diameter 2.7 mm.

This extinct marine species has been found in Pliocene strata of the Bowden Formation, Jamaica; age range: 3.6 to 2.588 Ma.