I. I.Mollusca C. C.Cephalopoda 1. 1.Nautiloids a. a.Nautilus – Shell with chambers 2. 2.Coleoids a. a.Octopuses – Eight arms, no shell; Cryptic b. b.Squids.
I.Mollusca B.Bivalvia Laterally compressedLaterally compressed Two-valved shellTwo-valved shell No headNo head No radulaNo radula Some have muscular foot.
