Scientists are attempting to compare features of extinct animals with living analogues.

科学家正试图把已灭绝动物的特征与现存类似动物相比较。

《牛津词典》

There's always some guesswork when studying extinct animals.

在研究灭绝的动物时，总要做一些猜测。

youdao

We can just call the ones we leave extinct animals.

我们也可以只召集那些快要灭绝的动物嘛。

youdao

So extinct animals were being succeeded by related living types.

BBC: Darwin's twin track: 'Evolution and emancipation'

There's always the emphasis on saving animals, but actually if you don't save the plants then everything will go extinct.

CNN: Half of magnolias face extinction