eel-shaped vertebrate without jaws or paired appendages including the cyclostomes and some extinct forms.
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and some extinct forms
还有一些已经灭绝的物种
以上为机器翻译结果，长、整句建议使用 人工翻译 。
More importantly, scientists are likely to lose access to some of the most important fossils and thereby miss out on potentially crucial discoveries about extinct life forms.
更重要的是，科学家将错失很多研究珍贵化石的机会，进而可能同一些关于灭绝生物的重大发现失之交臂。
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