The Cretaceous period is the era in Earth's history when dinosaurs thrived the most.

He is an American.

The American black bear lives in the forests of North America.

An American alligator can move very quietly underwater.

The American bison is a large mammal native to North America.

The American bison is known for its size and strength.

The New World warblers are small birds with colorful feathers.

The Humboldt squid is a large squid that lives in the deep sea.

This book is printed in American points.

The jaguar is known for its strength and beauty.