Craniospinal nerves ( CSN ; Herrick, 1915 ) : A topographic division of vertebrate nerves (Herophilus, c335-280 BC) consisting of the 12 traditional pairs of cranial nerves (Longet, 1842) and the variable number in different species of pairs of spinal nerves (Camper, 1760) considered together, and distinguished from the autonomic nerves (Langley, 1898). Most craniospinal nerves were known to Herophilus (335-280 BC), the founder of human anatomy (see Solmsen, 1961; von Staden, 1989), and the term itself was used by Herrick (1915, p. 223), and later by others including Williams & Warwick (1980, p. 1052).