魚類學相關名詞中英對照
名詞 定義 
monospondylous-diplospondylous transition The position on the ventral column where monospondylous centra end and diplospondylous centra begin. In lateral view the transition often appears as an abrupt decrease in length of the diplospondylous centrum, but this can be obscure in various sharks with very numerous, very short centra. Often a centrum of intermediate length appears between a long monospondylous centrum and a short diplospondylous centrum. In a few sharks there is a few stutter zone of alternating long and short centra that marks the transition. Also, the basidorsals and basiventrals have foramina for the spinal nerves on every other vertebra, rather than on each vertebra as in monospondylous vertebrae. The transition from long to short centra is generally coordinated with the transition of vertebrae with free ribs and no haemal arches to those without ribs and with haemal arches. However, in some sharks the two transitions can be anterior or posterior to each other.  
單椎骨與雙體椎型的轉變 在單椎骨椎體末端與雙體椎型的椎體開始的腹空腔位置。在側面,轉變時常呈現雙體椎型椎體的突然減短,但是這可能是隱蔽的在各種不同鯊魚有許多又非常短的椎體。時常一個中間長度的椎體出現在介於一個長的單椎體椎體與一個短的雙體椎型的椎體之間。在一些鯊魚中有交互長與短的椎體標誌那一個區域的轉變。同時,基背片與基腹片在每隔一脊椎骨上有脊柱神經的小孔,而不是在每個脊椎骨上如同在單椎體脊椎骨中。轉變從長的到短的椎體,通常伴隨與有分離肋骨沒有脈弓的脊椎骨轉換成沒有肋骨有脈弓。然而,在一些鯊魚兩者轉變中可能是前面後面彼此進行的。 
※中文內容系使用機器由英文內容翻譯。