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Echinoderm: alternatives and connections

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Echinoderm

One of the Echinodermata.

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Reviewed alternatives and contrasts

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Narrower term 7

Brittle star 76% connected

Any species of ophiuran starfishes. See Ophiuroidea.

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Crinoid 76% connected

Crinoidal.

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Holothurian 76% connected

Belonging to the Holothurioidea.

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Sea cucumber 76% connected

Any large holothurian, especially one of those belonging to the genus Pentacta, or Cucumaria, as the common American and European species. (P. frondo…

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Sea star 76% connected

A starfish, or brittle star.

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Sea urchin 76% connected

Any one of numerous species of echinoderms of the order Echinoidea.

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Starfish 76% connected

Any one of numerous species of echinoderms belonging to the class Asterioidea, in which the body is star-shaped and usually has five rays, though the…

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Broader term 1

Invertebrate 76% connected

Destitute of a backbone; having no vertebrae; of or pertaining to the Invertebrata.

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Component part 1

Ambulacrum 70% connected

One of the radical zones of echinoderms, along which run the principal nerves, blood vessels, and water tubes. These zones usually bear rows of locom…

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