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Asteroidea
Asteroidea (starfish; subphylum Asterozoa, class Stelleroidea) A subclass which includes all extant starfish, characterized by the possession of poorly demarcated, broad arms containing a large coelomic cavity. The open ambulacral grooves bear rows of large tube feet which are used especially in feeding and locomotion. Respiration takes place through external gills (papulae) which are restricted to the aboral surface. Asteroids occur from the Ordovician to the present.
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MICHAEL ALLABY. "Asteroidea." A Dictionary of Zoology. 1999. Encyclopedia.com. 30 May. 2012 <http://www.encyclopedia.com>. MICHAEL ALLABY. "Asteroidea." A Dictionary of Zoology. 1999. Encyclopedia.com. (May 30, 2012). http://www.encyclopedia.com/doc/1O8-Asteroidea.html MICHAEL ALLABY. "Asteroidea." A Dictionary of Zoology. 1999. Retrieved May 30, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O8-Asteroidea.html |
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starfish
starfish Any marine echinoderms with a central disc body and a five-rayed symmetry resulting in five to 40 radiating arms. The mouth is on the underside of the disc and the stomach can be extruded to digest other echinoderms and shellfish. Calcareous spines are embedded in the skin. Starfish move by means of tube feet, which they may also use for pulling open the bivalve molluscs on which they feed. Class Asteroidea.
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"starfish." World Encyclopedia. 2005. Encyclopedia.com. 30 May. 2012 <http://www.encyclopedia.com>. "starfish." World Encyclopedia. 2005. Encyclopedia.com. (May 30, 2012). http://www.encyclopedia.com/doc/1O142-starfish.html "starfish." World Encyclopedia. 2005. Retrieved May 30, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O142-starfish.html |
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Platyasterida
Platyasterida (starfish; class Stelleroidea, subclass Asteroidea) An order of starfish that are characterized by the arrangement of arm ossicles in transverse rows, from axial elements (adambulacrals, ambulacrals) laterally. Only one row of marginal ossicles is present. There are three genera, two Palaeozoic and one Holocene.
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Cite this article
MICHAEL ALLABY. "Platyasterida." A Dictionary of Zoology. 1999. Encyclopedia.com. 30 May. 2012 <http://www.encyclopedia.com>. MICHAEL ALLABY. "Platyasterida." A Dictionary of Zoology. 1999. Encyclopedia.com. (May 30, 2012). http://www.encyclopedia.com/doc/1O8-Platyasterida.html MICHAEL ALLABY. "Platyasterida." A Dictionary of Zoology. 1999. Retrieved May 30, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O8-Platyasterida.html |
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starfish
star·fish / ˈstärˌfish/ • n. (pl. same or -fishes) a marine echinoderm (class Asteroidea) with five or more radiating arms. The undersides of the arms bear tube feet for locomotion and, in predatory species, for opening the shells of mollusks. |
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Cite this article
"starfish." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. 30 May. 2012 <http://www.encyclopedia.com>. "starfish." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. (May 30, 2012). http://www.encyclopedia.com/doc/1O999-starfish.html "starfish." The Oxford Pocket Dictionary of Current English. 2009. Retrieved May 30, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O999-starfish.html |
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starfish
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Cite this article
MICHAEL ALLABY. "starfish." A Dictionary of Zoology. 1999. Encyclopedia.com. 30 May. 2012 <http://www.encyclopedia.com>. MICHAEL ALLABY. "starfish." A Dictionary of Zoology. 1999. Encyclopedia.com. (May 30, 2012). http://www.encyclopedia.com/doc/1O8-starfish.html MICHAEL ALLABY. "starfish." A Dictionary of Zoology. 1999. Retrieved May 30, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O8-starfish.html |
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starfish
starfish
•raffish • damselfish
•catfish, flatfish
•garfish, starfish
•redfish
•elfish, selfish, shellfish
•devilfish
•crayfish, waifish
•stiffish • kingfish • jellyfish
•killifish • filefish • pipefish
•white fish
•offish, standoffish
•codfish • dogfish • rockfish • crawfish
•swordfish
•blowfish, oafish
•goldfish
•bonefish, stonefish
•wolfish
•huffish, roughish, toughish
•mudfish • monkfish • cuttlefish
•lungfish • lumpfish • spearfish
•angelfish • parrotfish • silverfish
•haggish, waggish
•vaguish
•biggish, piggish, priggish, whiggish
•doggish, hoggish
•roguish, voguish
•puggish, sluggish, thuggish
•largish
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Cite this article
"starfish." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. 30 May. 2012 <http://www.encyclopedia.com>. "starfish." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. (May 30, 2012). http://www.encyclopedia.com/doc/1O233-starfish.html "starfish." Oxford Dictionary of Rhymes. 2007. Retrieved May 30, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O233-starfish.html |
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