Spinal nerve ganglia ( GS ; Burdach, 1819 ) : The topographic division consisting of sensory ganglia (Galen, c173) associated with the dorsal roots of the spinal nerve roots (Tiedemann, 1816), divided into cervical spinal ganglia, thoracic spinal ganglia, lumbar spinal ganglia, and coccygeal spinal ganglia. They were discovered in macrodissected adult humans by Coiter (1572, see translation, 1995, pp. 113-115) and named thus by Burdach (1819, vol. 1, p. 136).