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| 名詞 |
定義 |
| cleithrum |
The major bone of the pectoral girdle, extending upward from the pectoral fin base and forming the rear margin of the gill cavity, also:
the principal bow-shaped bone of the prectoral girlde, dermal in origin, forming the rear margin of the gill cavity. |
| 主匙骨 |
胸帶上之主要骨頭向上延伸到胸鰭基部，並形成鰓腔之後缘。為一主要弓狀骨，真皮起源。它背面以肩胛與鳥喙骨以 supracleithrum 與腹地接合。
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