We recognize five major classes within Phylum Mollusca for the purpose of this course.

Figures to know & Cladogram

Class Bivalvia Images
Bored Rock
Clam Halves
Razor Clam

Class Gastropoda Images
Dextral versus Sinstral
Egg Ribbon
Gastropoda
Land Slug

Class Cephalopoda Images
Chambered Nautilus
Chambered Nautilus 2
Cuttlefish-bone
Octopus
Squid
Squid Dissected

Class Scaphopoda Images
Tusk Shell

Class Polyplacophora Images
Chiton