Octopuses (Cephalopoda) also commonly known as Squids, is a biological class of the kingdom Animalia and phylum Mollusca.
Nautilida
Octopoda
Sepiida
Sepiolida
Spirulida
Teuthida
Vampyromorphida
Bivalvia
Caudofoveata
Gastropoda
Monoplacophora
Cephalopoda
Polyplacophora
Solenogastres
Scaphopoda