clearly visible during early development, also: the skeleton surrounding the inner ear or otic vesicle, composed of the prootic, opisthotic, exoccipital, and supraoccipital.
也可指是围住内耳或耳
骨骼，是
前耳骨、后耳骨、外枕骨与
枕骨所组成。
clearly visible during early development, also: the skeleton surrounding the inner ear or otic vesicle, composed of the prootic, opisthotic, exoccipital, and supraoccipital.
也可指是围住内耳或耳骨骼，是前耳骨、后耳骨、外枕骨与枕骨所组成。
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