#sphenoid_bone__sphenoid__os_sphenoidale  butterfly-shaped bone at the base of the skull
  supertype:  #bone__os  rigid connective tissue that makes up the skeleton of vertebrates
  part:  #crotaphion  #pterygoid_process
  part of:  #skull  the bony skeleton of the head of vertebrates
     part of:  #head__caput  the upper or front part of the body in animals; contains the face and brains; "he stuck his head out the window"
        part of:  #animal__animate_being__animatebeing__beast__brute__creature__fauna  a living organism characterized by voluntary movement
     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)

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