A paleontologist is a person who looks for

Hummingbird, sparrow, and dove are all kinds of

Dinosaurs are currently extinct.

Fossils are the preserved remains of animals that no longer live, such as bones or shells.

A T-Rex is a kind of dinosaur.

Susan Hendrickson found a fossil of a T-Rex

The fossil that Susan Hendrickson found was very small.

Fossils are shown in museums

"Extinct" means no longer living.

A T-Rex has no backbone

Birds have two feet.

Birds are the only kind of animal with feathers.

Birds have backbones

An ostrich and a penguin can fly.