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|Noun||1.||class Crinoidea - sea lilies |
Echinodermata, phylum Echinodermata - radially symmetrical marine invertebrates including e.g. starfish and sea urchins and sea cucumbers
crinoid - primitive echinoderms having five or more feathery arms radiating from a central disk
class - (biology) a taxonomic group containing one or more orders