#diencephalon__interbrain__betweenbrain__thalmencephalon  the posterior division of the forebrain; connects the cerebral hemispheres with the mesencephalon
  supertype:  neural_structure  a structure that is part of the nervous system
  part of:  forebrain
  part:  third_eye__thirdeye__pineal_eye  a sensory structure capable of light reception located on the dorsal side of the diencephalon in various reptiles
  part:  basal_ganglion__basalganglion  any of several masses of subcortical gray matter in each cerebral hemisphere that seem to be involved in the regulation of voluntary movement
  part:  thalamus  large egg-shaped structures of gray matter that form the dorsal subdivision of the diencephalon
     part:  geniculate_body  one of four small oval masses that protrude slightly from the underside of the thalamus and function as synaptic centers on the way to the cerebral cortex
  part:  hypothalamus  a basal part of the diencephalon governing autonomic nervous system

No statement uses or specializes diencephalon; click here to add one.