cephalopod


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cephalopod

(sĕf′ə-lə-pŏd′)
n.
Any of various carnivorous marine mollusks of the class Cephalopoda, having a large head, a mouth with a chitinous beak surrounded by arms or tentacles, and in most species, an ink sac containing a dark fluid used for defense, and including the octopuses, squids, cuttlefishes, and nautiluses.

ceph·a·lo·pod′ adj.

cephalopod

any member of the class Cephalopoda containing molluscs such as squids (10 arms) and octopuses (8 arms). They have a well-developed brain, eyes very similar to vertebrate eyes (an example of CONVERGENCE), and are capable of rapidly changing colour through the possession of CHROMATOPHORES.
References in periodicals archive ?
Among marine molluscs, some cephalopods, such as small paralarvae (e.g., young pelagic squids; Young & Harman 1988) that have been chemically preserved while alive typically remain in the ball posture (Young 1972, Goto 2005).
Xavier for assisting with cephalopod beak identification, as well as J.
Like other cephalopods, cuttlefish possess well-developed vision; therefore, they must perceive particular visual information from prey and then initiate hunting behavior, in a manner similar to a typical reaction to the sign stimulus reported in other animals.
If this is indeed a happy note in a time of generally bad news for marine life, I for one welcome our new cephalopod overlords.
Led by James Pikul and Robert Shepherd, the team's pneumatically-activated material takes a cue from the 3D bumps, or papillae, that cephalopods can express in one-fifth of a second for dynamic camouflage, and then retract to swim away without the papillae imposing hydrodynamic drag.
This exciting and extremely rare intertidal encounter has prompted a formal report on the sighting and also an overview of the biology of this species and of cephalopods more generally.
Cephalopod remains (whole beaks, beak fragments, and eye lenses) and fish remains (bones and eye lenses) were preserved in 50% isopropyl alcohol and fish otoliths were stored dry.
The moderately expanding shell of the Early Ordovician cephalopod Hedstroemoceras haelluddense Foerste shows narrow zig-zag bands.