#coccyx__tail_bone  the end of the vertebral column in humans and tailless apes
  supertype:  bone__os  rigid connective tissue that makes up the skeleton of vertebrates
  part:  coccygeal_vertebra
  part of:  spinal_column__vertebral_column__vertebralcolumn__spine__backbone__back__rachis  the series of vertebrae forming the axis of the skeleton and protecting the spinal cord; "the fall broke his back"
     part of:  axial_skeleton__axialskeleton  the part of the skeleton that includes the skull and spinal column and sternum and ribs
        part of:  endoskeleton  the internal skeleton; bony and cartilaginous structure (especially of vertebrates)
  part of:  pelvis__pelvic_girdle__pelvic_arch__hip  the structure of the vertebrate skeleton supporting the lower limbs in humans and the hind limbs or corresponding parts in other vertebrates
     part of:  appendicular_skeleton  the part of the skeleton that includes the pectoral girdle and the pelvic girdle and the upper and lower limbs
        part of:  endoskeleton  the internal skeleton; bony and cartilaginous structure (especially of vertebrates)

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