Living Fossils' Aren't Really a Thing

PBS_EonsPublished: December 14, 2018Updated: December 17, 2018
Published: December 14, 2018Updated: December 17, 2018

Crocodiles, horseshoe crabs and tuatara are animals that have persisted for millions of years, said to have gone unchanged since the days of the dinosaurs. But even the most ancient-looking organisms show us that evolution is always at work.

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