Cephalopod - Wikipedia Cephalopods became dominant during the Ordovician period, represented by primitive nautiloids The class now contains two, only distantly related, extant subclasses: Coleoidea, which includes octopuses, squid, and cuttlefish; and Nautiloidea, represented by Nautilus and Allonautilus
Cephalopod | Definition, Etymology, Species, Facts | Britannica cephalopod, any member of the class Cephalopoda of the phylum Mollusca, a small group of highly advanced and organized, exclusively marine animals The octopus, squid, cuttlefish, and chambered nautilus are familiar representatives
Cephalopods: Octopus, Squid, Cuttlefish, and Nautilus A highly intelligent group of ocean dwelling creatures, the living cephalopods include the eight-armed octopuses, the ten-armed squids and cuttlefishes, and the shelled chambered nautiluses
Cephalopod - Examples, Types, Characteristics, Evolution, Pictures Cephalopods are a group of mollusks characterized by a bilaterally symmetric body and a prominent head with appendages They belong to the Cephalopoda class, which includes squid, octopus, cuttlefish, and nautilus
Cephalopods - Marine Biological Laboratory Cephalopods (squid, octopus, cuttlefish, and nautilus) are a class of molluscs with an evolutionary history spanning more than 500 million years
The Cephalopoda - University of California Museum of Paleontology Cephalopods are the most intelligent, most mobile, and the largest of all molluscs Squid, octopuses, cuttlefish, the chambered nautilus, and their relatives display remarkable diversity in size and lifestyle with adaptations for predation, locomotion, disguise, and communication
Octopus, Squid, Cuttlefish, and Nautilus - The Cephalopod Page Cephalopods were once one of the dominant life forms in the world's ocean Today there are only about 800 living species of cephalopods (compare that with 30,000 living species of bony fish, see FishBase)
Cephalopoda | INFORMATION | Animal Diversity Web Cephalopoda means "head foot" and this group has the most complex brain of any invertebrate Cephalopods are characterized by a completely merged head and foot, with a ring of arms and or tentacles surrounding the head The arms, tentacles, and funnel are all derivatives of the foot