#phylum_Echinodermata__Echinodermata  radially symmetrical marine invertebrates including e.g. starfish and sea urchins and sea cucumbers
  supertype:  phylum  (biology) the major taxonomic group of animals and plants; contains classes
  member of:  kingdom_Animalia
  member:  echinoderm  marine invertebrates with tube feet and calcite-covered five-part radially symmetrical bodies
  member:  class_Asteroidea__Asteroidea  sea stars
     member:  starfish__sea_star__seastar  echinoderms characterized by five arms extending from a central disk
  member:  class_Ophiuroidea__Ophiuroidea  brittle stars and basket stars
     member:  subclass_Ophiurida__Ophiurida  brittle stars
        member:  brittle_star__brittlestar__serpent_star__serpentstar  an animal resembling a starfish with fragile whiplike arms radiating from a small central disc
     member:  subclass_Euryalida__Euryalida  basket stars
        member:  basket_star__basket_fish  any starfish-like animal of the genera Euryale or Astrophyton or Gorgonocephalus having slender complexly branched interlacing arms radiating from a central disc
        member:  genus_Euryale__Euryale  basket stars
        member:  genus_Astrophyton__Astrophyton  includes many of the basket stars
           member:  Astrophyton_muricatum  a variety of basket star
        member:  genus_Gorgonocephalus__Gorgonocephalus  basket stars
  member:  class_Echinoidea__Echinoidea  sea urchins and sand dollars
     member:  sea_urchin__seaurchin  shallow-water echinoderms having soft bodies enclosed in thin spiny globular shells
     member:  order_Exocycloida__Exocycloida  flat sea urchins
        member:  sand_dollar  flattened disklike sea urchins that live on sandy bottoms
     member:  order_Spatangoida__Spatangoida  heart-shaped sea urchins
        member:  heart_urchin__hearturchin  sea urchin having a heart-shaped body in a rigid spiny shell
  member:  class_Crinoidea__Crinoidea  sea lilies
     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
  member:  class_Holothuroidea__Holothuroidea  class of echinoderms including the sea cucumbers
     member:  sea_cucumber__seacucumber__holothurian  echinoderm having a flexible sausage-shaped body, tentacles surrounding the mouth and tube feet; free-living mud feeders: sea cucumbers
     member:  family_Holothuridae__Holothuridae  a family of Holothuroidea
        member:  genus_Holothuria__Holothuria  type genus of the Holothuridae
           member:  trepang__Holothuria_edulis  of warm coasts from Australia to Asia; used as food especially by Chinese

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