Spire (mollusc)
From Freepedia
The Spire in a mollusc shell constitutes all the whorls of a spiral shell exclusive except for the body whorl.
Turbinoform, Turbinate: having a broadly conical spire and convex base, as in Turbo. Turban-shaped.
Turriform: With a many whorled, slender spire, as in Turittella.



