Ancient teeth reveal clues to the environment humans’ early ancestors evolved in millions of years ago

Through fossilized tooth enamel, scientists are reconstructing the diets and landscapes that existed millions of years ago. We really are what we eat.

By: Zelalem Bedaso, University of Dayton, The Conversation

Outlets: The Conversation

Published: April 17, 2026

Words: 1,085

Last Updated: 3 months, 2 weeks ago

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By Zelalem Bedaso, University of Dayton

Teeth are like tiny biological time capsules. They tell stories about ancient diets and environments long after their owners have died and landscapes have changed.

After bones break down, tooth enamel stays hard and unchanged, even in fossilized teeth that have been buried under sediment and rock for millions of years and are now being uncovered by erosion or excavation.

Tooth enamel forms when an animal is …

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