This is one of several characteristics that most members of this class share. The foot in Cephalopods is incorporated into the mantle cavity and the head is in line with the visceral mass. Class Cephalopoda. Cephalopods are mollusks (Cephalopoda), a class that includes octopuses, squid, cuttlefish, and also nautilus. The name of this class is taken from the Greek word. What does Cephalopoda mean? The body has the bilateral symmetry. These are ancient species that are discovered in all of the globe’s oceans, and are believed to have actually originated about 500 thousand years earlier. Class Cephalopoda  General characteristics: They are the most complex invertebrates and mulluscs , The foot of a cephalopoda has evolved into tentacles or arms used for capturing prey, movement , and attachment. Class Cephalopoda (“head foot” animals) includes octopi, squids, cuttlefish, and nautilus. The man who created the scuba and the first to say that the octopus was intelligent. Squid, cuttlefish, octopus, nautilus. Their foot is divided into may tentacles with strong suction cups or hooks for capturing prey. In English, it means head feet. Cephalopods are a class of shell-bearing animals as well as mollusks with a reduced shell. The name "Cephalopoda" literally means "head-foot", as the foot is directly attached to the head. Today, scientists divide the living cephalopods into … Cuttlefish, like most cephalopods, have a large and well-developed head. Squid are in the Mollusca phylum and the class Cephalopoda. The word cephalopod means "head-footed" and describes the body structure of the invertebrates. Cephalophod Characteristics • Characteristics of class • All marine • Most 6-70 cm up to 20m Architeuthis • Shell divided by septa, chambers connected by siphuncle • Closed circulatory system • Foot modification • Ganglia fused to form large brain in cartilaginous cranium • ~700 … The most noticeable characteristic is the tentacles. The cephalopods are a diverse class of mollusks (a group that also includes snails and bivalves) that emerged during an explosion of animal diversity in the oceans during the Cambrian period, over 500 million years ago (mya). "head foot" Who is Jacques Cousteau? Can you tell me the characteristics of cephalopods? Developed head, tentacles, large brain, chitinous beak/radula. All cephalopods are predators. Characteristics of Clas Cephalopoda. Unlike its extant sister group Nautiloidea, whose members have a rigid outer shell for protection, the coleoids have at most an internal cuttlebone, gladius, or shell that is used for buoyancy or support. Cephalopod - Cephalopod - Classification: In fossil cephalopods, reliance is placed upon shell details (general shape, type of coiling, external sculpture, and sutures). Examples of class Cephalopoda. They have a prominent head. 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