化石证据已锁定了最为可能的凶手：另一条鱼龙。
Fossil forensics has now identified the most likely culprit: another ichthyosaur.
不过，这个时期并没有发现生命的化石证据。
No fossil evidence of life has yet been found from this period.
尽管如此，化石上的记录保留了很多古老物种存在过的证据。
However, the fossil record retains evidence of many of these older species.
尽管如此，化石上的记录保留了很多古老物种存在过的证据。
However, the fossil record retains evidence of many of these older species.
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