#class_Crinoidea__Crinoidea  sea lilies
  supertype:  #class__clas  (biology) a taxonomic group containing one or more orders
  member of:  #phylum_Echinodermata
  member:  #crinoid  primitive echinoderms having five or more feathery arms radiating from a central disk
  member:  #genus_Ptilocrinus__Ptilocrinus  sea lilies
     member:  #sea_lily__sealily  crinoid with delicate radiating arms and a stalked body attached to a hard surface
  member:  #family_Antedonidae__Antedonidae  feather stars
     member:  #genus_Antedon__Antedon  a genus of echinoderms of the family Antedonidae
        member:  #feather_star__featherstar__comatulid  free-swimming stalkless crinoid with ten feathery arms; found on muddy sea bottoms

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