Noun crinoidea has 1 sense
  1. Crinoidea, class Crinoidea - sea lilies
    --1 is a kind of class
    --1 is a member of Echinodermata, phylum Echinodermata
    --1 has members:
     crinoid; Ptilocrinus, genus Ptilocrinus; Antedonidae, family Antedonidae
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