Disproving Evolution

Elsewhere on the internet there's a discussion about whether evolution can be disproved by simply finding a fossil out of order.

Here's what I said on Facebook ...

The statement is untrue. If we discover that a given species is older than we thought then we will just revise our view of the history of life on Earth. It will not disprove the fact of evolution and it will have no effect on evolutionary theory. It is a mistake to link the truth of evolution to our current understanding of the history of life. That history can be easily changed without threatening evolution.

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