This line of thinking raised an exciting possibility: Perhaps language left a fossil record after all-not in buried bones, but in our DNA.

这种思路展现了一种激动人心的可能性：语言可能留下了化石纪录——不是埋在地下的骨头，而是在我们的DNA当中。

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However, if life once existed in surface environments, it is likely to have left behind a fossil record in ancient sediments now exposed at the surface.

然而，如果生命一旦在地表出现，他很有可能留下化石记录。这个记录可能是古沉积物形式保留在地表。

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He was responsible for the the recognition of geological strata, and the theory that successive layers of geological formations (strata) contained a fossil record of life in chronological order.

地层的发现以及连续的地质构造(地层)包含的化石记录了按时间顺序出现的生命的理论都有他的功劳。

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Although the basic elements of the framework document are still there, both sides have already scrutinised the brief text of the new proposals like palaeontologists poring over a fossil record.

ECONOMIST: The end of the beginning

Future landers might investigate the spots for signs of a Martian fossil record.

CNN: Race to Mars begins a distant search for life

He explained that it filled a gap in the fossil record, demonstrating that dinosaurs split into their three major groups - theropods, sauropodomorphs and ornithischians - very early in their evolution.

BBC: T.rex 'little cousin' discovered