National Museum of Natural History Geologic Time Site

Imagine worlds filled with strange creatures: two-meter long millipede look-alikes, marine lizards the size of whales, or horses with three toes. Imagine rainforests where today there are deserts, glaciers near the equator, and warm seas at the North Pole. These alien worlds and creatures are our own Earth in the distant past. In fossils, Earth's ancient plants and animals have left us clues to their existence. And the very rocks beneath us tell the story of the planet itself. Together they provide the tale of a remarkable journey through time: the story of a changing Earth.

Flash Version | Skip Intro