Classes in the Phylum Mollusca
Polyplacophora (G: many plate bearing = chitons)
Aplacophora (G: not shell bearing)
Monoplacophora (G: one shell bearing)
Gastropoda (G: Stomach foot)
Bivalvia = Pelecypoda (L. two valved[G: hatchet foot])
Scaphopoda (G: spade foot)
Class Cephalopoda (G: head foot) [odors from halitosis and toe cheese are hard to distinguish in this group.]