Horseshoe crabs have survived over 450 million years with almost no evolutionary changes

Crocodiles outlived the dinosaurs by adapting to changing climates and environments since the Mesozoic era

The coelacanth, a deep-sea fish, was thought extinct but still swims today after 400 million years

Tuatara reptiles in New Zealand are the last survivors of a species that lived with dinosaurs

Nautiluses, ancient shellfish, have floated through oceans for more than 500 million years

These creatures are living fossils—remarkable survivors of Earth’s most catastrophic extinction events