刺背鳄蜥的进化速率比起包括洞熊、狮子、公牛和马在内的动物，都要快得多。
The tuatara rate is significantly faster than for animals including the cave bear, lion, ox and horse.
他们发现，虽然刺背鳄蜥的大部分形态在长期的进化中并没有产生变化，但从DNA层面上看，它们比其他已经检测过的动物的进化速度都要快。
They found that, although tuatara have remained largely physically unchanged over very long periods of evolution, they are evolving - at a DNA level - faster than any other animal yet examined.
新西兰鳄蜥就面临着这种孤独而又可怕的命运。 一个新的研究表明，随着温度持续上升，这个濒临灭绝的爬行类动物到2085年时生育的后代可能都将是雄性。
With rising temperatures, this endangered reptile could produce all male offspring by 2085, guaranteeing its extinction, a new study finds.
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