The idea that birds—the most diverse group of land vertebrates, with nearly 10, 000 living species—descended directly from dinosaurs isn't new.

鸟类是陆生脊椎动物中分支最多的群体，拥有将近10000个不同的种类，有科学家认为鸟类是直接从恐龙进化而来的，这种想法并不新鲜。

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The new species belongs to a group of dinosaurs called the Ornithischia.

这一新物种属于鸟龙类。

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The team has been careful not to call Denisovans a new species, opting instead to label them as a Neanderthal "sister group."

该研究小组谨慎的未将丹尼索万人称为新的人类物种，而是将他们定为尼安德特人的“姊妹族”。

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It is thought to belong to a new species of pliosaur - a group of large, short-necked reptiles that lived at the time of the dinosaurs.

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There may even be an entirely new species of web-footed crocodile, according to a hunter-turned-conservation-officer employed by the group Cat Action Treasury.

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