Stromb :: Stromatology (n.) The history of the formation of stratified rocks.
Strombite :: Stromb (n.) Any marine univalve mollusk of the genus Strombus and allied genera. See Conch, and Strombus..
Stromboid :: Strombite (n.) A fossil shell of the genus Strombus.
Strombus :: Strombuliform (a.) Coiled into the shape of a screw or a helix.