- Cephalopoda, class Cephalopoda - octopuses; squids; cuttlefish; pearly nautilus
--1 is a kind of class
--1 is a member of Mollusca, phylum Mollusca
--1 has members:cephalopod, cephalopod mollusk; Nautilidae, family Nautilidae; Dibranchiata, subclass Dibranchiata, Dibranchia, subclass Dibranchia