http://upload.wikimedia.org/wikipedia/commons/5/54/EmbryonicBrain.svg

The more posterior and ventral of two forebrain neuromeres, the other being the telencephalon; major derivatives are the eye cups, the brain pretectal region, the thalamus, hypothalamus, and epithalamus (including the habenula and epiphysis). Kimmel et al, 1995.[TAO], Unpaired part of the forebrain comprised of three major parts; the epithalamus, thalamus, and hypothalamus.[AAO]

in ABA, this is part of the brain stem

DiE

uberon

betweenbrain, diencephalon

diencephalic

Fine structural, computerized three-dimensional (3D) mapping of cell connectivity in the amphioxus nervous system and comparative molecular genetic studies of amphioxus and tunicates have provided recent insights into the phylogenetic origin of the vertebrate nervous system. The results suggest that several of the genetic mechanisms for establishing and patterning the vertebrate nervous system already operated in the ancestral chordate and that the nerve cord of the proximate invertebrate ancestor of the vertebrates included a diencephalon, midbrain, hindbrain, and spinal cord.[well established][VHOG]

UBERON:0001894

http://purl.obolibrary.org/obo/NCBITaxon_7762

• pituitary gland
• mammillary body
• epithalamus
• hypothalamus
• dorsal plus ventral thalamus

• future diencephalon

• diencephalon neural crest

• gray matter of diencephalon
• future neurohypophysis
• decussation of diencephalon
• white matter lamina of diencephalon
• diencephalic white matter
• meninx of diencephalon
• gland of diencephalon
• optic stalk
• tract of diencephalon
• diencephalic nucleus
• diencephalon subarachnoid space