It also had a second jaw joint made up of the same two bones as the jaw joints of all living mammals - the dentary or mandible, and the squamosal.
还有第二个下颌关, 由与所有现存哺乳动物的下颌关的两块骨头组成——齿骨或下颌骨,以及鳞骨。
关注我们的微信
下载手机客户端
划词翻译
详细解释