Fossils
Definition
Fossils are the remains or traces of plants and animals that lived on Earth long ago and got preserved in rocks.
Main Details
Fossils form over millions of years.
They are usually found in sedimentary rocks.
Fossils help scientists learn about ancient life and Earth’s history.
Not only bones—footprints, leaves, shells, and even marks can be fossils.
Examples
Dinosaur bones
Fossilized leaves
Shells found in rocks
Footprints of ancient animals
Insects trapped in amber
Fun Fact
Some fossils found today are older than the mountains and rivers we see on Earth!
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