When does a bone become a fossil?
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When does a bone become a fossil?

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A reconstruction of the skull of a Homo naledi child

Brett Eloff Photography/Wits University

This is an extract from Our Human Story, our newsletter about the revolution in archaeology. Sign up to receive it in your inbox for free every month.

The word “fossil” is one that I type out rather frequently. You’ll often read stories about new hominin remains in which they are described as fossils. But hang on. Fossils take a long time to form, so how old does a human bone or tooth need to be before it counts as a fossil? Should…

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