mastoid canaliculus mastoid canaliculus in the lateral part of the jugular fossa of the temporal bone is the mastoid canaliculus for the entrance of the auricular branch of the vagus nerve. mastoid canaliculusleft temporal bone. inferior surface. (label for mastoid canaliculus is on left, sixth from the top.)detailsidentifierslatincanaliculus mastoideusta98a02.1.06.044ta2681fma56459anatomical terms of bone additional images base of skull. inferior surface.