Calliostoma scalenum

Calliostoma scalenum, common name the Gulfstream top shell, is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.

Description
The size of the shell varies between 14 mm and 41 mm.

Distribution
This species occurs in the Gulf of Mexico and in the Atlantic Ocean off North Carolina, USA, at depths between 25 m and 80 m.