#spine  a sharp rigid animal process or appendage; as a porcupine quill or a ridge on a bone or a ray of a fish fin
  supertype:  #outgrowth__process__proces  a natural prolongation or projection from a part of an organism either animal or plant; "a bony process"
  subtype:  #ray.spine  any of the stiff bony rods in the fin of a fish
  subtype:  #quill  a stiff hollow protective spine on a porcupine or hedgehog

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