北欧前寒武纪的碎屑岩 sparagmite
因此，前寒武纪的动物肯定曾经生活在这么深的地方。
Precambrian animals must therefore have lived at such depths.
发现的并不是前寒武纪的动物本身，而是它们的足迹。
These findings are not of Precambrian animals themselves, but of their tracks.
研究结果还表明磁化率能够作为前寒武纪的古气候替代性指标。
This research also reveals that susceptibility can be used as a palaeoclimate proxy for Precambrian successions.
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