article: Mollusc
links: Octopus Chiton Nudibranch Polyplacophora Cambrian Aplacophora Animal Scaphopoda Cephalopoda Shell (zoology) Cephalopod Monoplacophora Ediacaran Schistosomiasis Lophotrochozoa Carolus Linnaeus Squid Bivalvia Gastropoda Helcionelloida