
1) Phylum 2) Phylum echinodermata
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• (n. pl.) One of the grand divisions of the animal kingdom. By many writers it was formerly included in the Radiata.
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Echinoderms meaning spiny skin) are a phylum of salt-water animals whose living members have five arms or rays (or multiples of five). They are mostly bottom-dwellers. These invertebrates include: starfish (sea stars) , sea urchins, sand dollars , crinoids, sea squirts, sea cucumbers, etc.
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<marine biology> Phylum of exclusively marine animals. The phylum is divided into 5 classes: the Asteroidea (starfish), the Echinoidea (sea urchins), the Ophiuroidea (brittle stars and basket stars), the Holothuroidea (the sea cucumbers) and the Crinoidea (sea lilies and feather stars). ... (19 Jan 1998) ...
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Phylum of exclusively marine animals. The phylum is divided into 5 classes: the Asteroidea (starfish), the Echinoidea (sea urchins), the Ophiuroidea (brittle stars and basket stars), the Holothuroidea (the sea cucumbers) and the Crinoidea (sea lilies and feather stars).
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E·chi`no·der'ma·ta (e*kī`no*dẽr'mȧ*tȧ)
noun plural [ New Latin , from Greek
'echi^nos hedgehog, sea urchin +
de`rma ,
-atos , skin.]
(Zoology) One of the grand divisions of the animal kingdom. By many writers it was formerly i...
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http://www.encyclo.co.uk/webster/E/6

Type: Term Pronunciation: e-kī′nō-der′mă-tă Definitions: 1. A phylum of Metazoa that includes starfish, sea urchins, sea lilies, and other classes. All but the sea cucumbers (Holothuroidea) are basically radially symmetrical and most possess a calcareous endoskeleton with external spines. They inhabit the sea bottom,...
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http://www.medilexicon.com/medicaldictionary.php?t=27685

[
n] - radially symmetrical marine invertebrates including e.g. starfish and sea urchins and sea cucumbers
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http://www.webdictionary.co.uk/definition.php?query=Echinodermata
phylum Echinodermata noun radially symmetrical marine invertebrates including e.g. starfish and sea urchins and sea cucumbers
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https://www.encyclo.co.uk/local/20974
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