它的下颚直接铰接在头骨上，还有多骨的，有肉的、有接缝的鳍。
It has a jaw that is hinged at the cranium and has bony, meaty, jointed fins.
当涉及多骨性骨时，病变改变了眼眶的结构。
The lesions changed the structure of orbit when polyostotic bones were involved.
这可不是一件简单的技术：该小组检查了70多块骨头，仅仅找到一块，这是一块发现于克罗地亚Vindija洞穴中的大腿骨。它拥有足够好的条件来保证此项技术的顺利实现。
This was no mean feat: the team tested more than 70 bones and found just one, a thigh bone found in a cave in Vindija, Croatia, that was in good enough condition for the technique to succeed.
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