Tomeia differs from other capitosaurs in its short suture between the
parasphenoid and
pterygoid, its intervening margin of parasphenoid that blocks ventral contact between the pterygoid and
exoccipital, its pronounced ornamentation on the ventral surface of the parasphenoid, its more dorsally located
oblique ridge relative to other capitosaurs, its slit-like posttemporal fenestra, and the exceptionally large size of its paraquadrate foramen when compared with the accessory paraquadrate foramen. == References ==