A right conception of the genesis of a vertebral column, includes not only the differentiations from which result the Chorda dorsalis and the vertebral segments imbedded in it; but quite as much it includes the coalescence of numerous vertebral processes with their respective vertebral bodies.
"Essays: Scientific, Political, & Speculative, Vol. I"
Herbert Spencer
The sense of taste is often impaired from involvement of the Chorda tympani nerve.
"Manual of Surgery Volume Second: Extremities--Head--Neck. Sixth Edition."
Alexander Miles Alexis Thomson
The heart existed as a simple pulsating vessel; and the Chorda dorsalis took the place of a vertebral column.
"The Descent of Man and Selection in Relation to Sex, Vol. I (1st edition)"
Charles Darwin