And based on physiology and the comparisons, they estimated the pitch and length of each note that the ancient species sang.

基于生理学和比较学的理论，他们估计出了这个古老物种的每个音符的音高和长度。

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A recent study of ancient and modern elephants has come up with the unexpected conclusion that the African elephant is divided into two distinct species.

一项针对古代和现代大象的研究得出一个出人意料的结论：非洲大象已经分化成两个不同的物种。

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China has the world's most ancient tree species — metasequoia.

中国有世界最古老的树种——水杉。

《新英汉大辞典》

Sharks are one of the most ancient species on the planet.

BBC: Shark

Almost all the SSSIs are within the High Weald area of outstanding natural beauty, and the scheme would also affect several ancient woodlands and the habitats of species of European importance, including dormouse and great crested newt.

BBC: Hastings bypass plan 'flawed'

Gigantic because the sturgeon, a bottom-feeding species as ancient as the dinosaur, can live for a century and grow to 25 feet.

FORBES: Magazine Article