皱鳃鲨可以称得上是活化石了，在外形上还保留着许多它生活在恐龙时代海洋中的先祖的特征。

Considered living fossils, frilled sharks bear many physical characteristics of ancestors who swam the seas in the time of the dinosaurs.

youdao

自从2005年以来，喙头蜥---由于它们恐龙时代的家世而被称为“活化石”---已经被重新引入发现新幼仔的保护区内。

Since 2005, tuataras—considered "living fossils" because of their dinosaur-age lineage—have been reintroduced into a sanctuary where the new baby was found.

youdao

自从2005年以来，喙头蜥---由于它们恐龙时代的家世而被称为“活化石”---已经被重新引入发现新幼仔的保护区内。

Since 2005, tuataras—considered "living fossils" because of their dinosaur-age lineage—have been reintroduced into a sanctuary where the new baby was found.

youdao