Antonyms of caudal:
cephalic, anterior, acaudal, acaudate.
Examples of usage:
  1. These numerical differences principally depend on the unequal development of the caudal portion, or tail- end, of the column.
    "The Book of Household Management", Mrs. Isabella Beeton.
  2. He asked himself whether he could not slip backward, grasp the swinging tail, and dropping to the ground, keep his feet while he held fast to the caudal appendage, and pulling the other way, act as a brake upon the progress of the animal until all the others had passed on.
    "The Hunters of the Ozark", Edward S. Ellis.
  3. Halfadozen vacant faces gaped at me, the burdening pump, the caudal hose.
    "Greener Than You Think", Ward Moore.