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Cephalopodic :: Cephalopodic (a.) Alt. of Cephalopodou.

Siphoniferous :: Siphoniferous (a.) Siphon-bearing, as the shell of the nautilus and other cephalopods..

Siphuncle :: Siphuncle (n.) The tube which runs through the partitions of chambered cephalopod shells.

Calamary :: Calamary (n.) A cephalopod, belonging to the genus Loligo and related genera. There are many species. They have a sack of inklike fluid which they discharge from the siphon tube, when pursued or alarmed, in order to confuse their enemies. Their shell is a thin horny plate, within the flesh of the back, shaped very much like a quill pen. In America they are called squids. See Squid..

Infundibulum :: Infundibulum (n.) The siphon of Cephalopoda. See Cephalopoda.

Sea Devil :: Sea devil () Any large cephalopod, as a large Octopus, or a giant squid (Architeuthis). See Devilfish..

Dibranchiata :: Dibranchiata (n. pl.) An order of cephalopods which includes those with two gills, an apparatus for emitting an inky fluid, and either eight or ten cephalic arms bearing suckers or hooks, as the octopi and squids. See Cephalopoda..

Baculite :: Baculite (n.) A cephalopod of the extinct genus Baculites, found fossil in the Cretaceous rocks. It is like an uncoiled ammonite..

Squid :: Squid (n.) Any one of numerous species of ten-armed cephalopods having a long, tapered body, and a caudal fin on each side; especially, any species of Loligo, Ommastrephes, and related genera. See Calamary, Decacerata, Dibranchiata..

Cephalopoda :: Cephalopoda (n. pl.) The highest class of Mollusca.

Mesozoa :: Mesozoa (n. pl.) A group of very lowly organized, wormlike parasites, including the Dicyemata. They are found in cephalopods. See Dicyemata..

Mollusca :: Mollusca (n. pl.) One of the grand divisions of the animal kingdom, including the classes Cephalopoda, Gastropoda, PteropodaScaphopoda, and Lamellibranchiata, or Conchifera. These animals have an unsegmented bilateral body, with most of the organs and parts paired, but not repeated longitudinally. Most of them develop a mantle, which incloses either a branchial or a pulmonary cavity. They are generally more or less covered and protected by a calcareous shell, which may be univalve, bivalve, or m

Devilfish :: Devilfish (n.) A large cephalopod, especially the very large species of Octopus and Architeuthis. See Octopus..

Octopus :: Octopus (n.) A genus of eight-armed cephalopods, including numerous species, some of them of large size. See Devilfish,.

Octocerata :: Octocerata (n.pl.) A suborder of Cephalopoda including Octopus, Argonauta, and allied genera, having eight arms around the head; -- called also Octopoda..

Ammonite :: Ammonite (n.) A fossil cephalopod shell related to the nautilus. There are many genera and species, and all are extinct, the typical forms having existed only in the Mesozoic age, when they were exceedingly numerous. They differ from the nautili in having the margins of the septa very much lobed or plaited, and the siphuncle dorsal. Also called serpent stone, snake stone, and cornu Ammonis..

Belemnite :: Belemnite (n.) A conical calcareous fossil, tapering to a point at the lower extremity, with a conical cavity at the other end, where it is ordinarily broken; but when perfect it contains a small chambered cone, called the phragmocone, prolonged, on one side, into a delicate concave blade; the thunderstone. It is the internal shell of a cephalopod related to the sepia, and belonging to an extinct family. The belemnites are found in rocks of the Jurassic and Cretaceous ages..

Decacerata :: Decacerata (n. pl.) The division of Cephalopoda which includes the squids, cuttlefishes, and others having ten arms or tentacles; -- called also Decapoda. [Written also Decacera.] See Dibranchiata..

Siphonifer :: Siphonifer (n.) Any cephalopod having a siphonate shell.

Orthoceras :: Orthoceras (n.) An extinct genus of Paleozoic Cephalopoda, having a long, straight, conical shell. The interior is divided into numerous chambers by transverse septa..

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