Results: In each specimen, there were more foramina on the medial surface of the mandible than those on the lateral, and the inferior region more than the superior region.

• 结果：下颌骨内侧面着色副孔的出现率比外侧面的多；在外侧面，下区上部的着色副孔数最多；在内侧面，下区中部的着色副孔数最多。