The anterior opening of the pterygoid canal was located behind the sphenopalatine foramen and had a round infundibular shape . The openings were about 3 mm in the transverse diameter and passed through by the vidian nerve and the pterygoid artery .

翼管前口位于蝶腭孔后方约7mm，呈圆形漏斗状，横径约3mm，略向外下方开口，距离鼻小柱平均71.72mm，有 翼 管神经和翼管 动脉穿过。