Living Fossils' Aren't Really a Thing
Season 1 Episode 16 | 5m 5s
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.
Aired: 02/15/18Video has closed captioning.