Antedon is member of the class

Echinoidea

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Asteroidea

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Crinoidea

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Ophiuroidea

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Solution

The correct option is C Crinoidea
Antedon is a genus of free-swimming, stemless crinoids. Members of this genus have no stems but have five pairs of feathery arms arising from a central concave disc. There are a number of cirri or unbranched appendages on a low, cone-shaped dorsal ossicle, a bone-like structure in the centre of the disc. Hence, option C is correct answer.

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