Conodonts went extinct at the end of the Triassic Period, about the time dinosaurs were evolving.
牙形刺在三叠纪末期灭绝了，这正是恐龙开始演化的时代。
Asilisaurus lived during the Triassic, when crocodile-like beasts ruled the Earth, with dinosaurs becoming dominant only during the Jurassic, some 35 million years later.
asilisaurus生活在三叠纪时期，也就是鳄鱼与类鳄生物统治地球的时期，而恐龙在侏罗纪时期对地球统治则是35万年后的事了。
Both mammals and dinosaurs appeared near the end of the Triassic period, some 220 million years ago.
哺乳动物与恐龙同时出现于三叠纪末期，即约两亿两千万年前。
Dinosaurs first appear in the fossil record during the Triassic period, some 230m years ago.
根据化石记载，恐龙最早出现在三叠纪期间，也就是大约2亿3000万年以前。
The first primitive dinosaurs appeared in the early Triassic period, about 230 million years ago.
最初的原始恐龙出现在三叠纪早期，大约是2亿3千万年前。
The first primitive dinosaurs appeared in the early Triassic period, about 230 million years ago.
最初的原始恐龙出现在三叠纪早期，大约是2亿3千万年前。
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