Examines how Jack's discoveries would soon change how people thought about the way dinosaurs lived.

Jack Horner was seven years old when he made his first dinosaur find. Later, he made his greatest discovery by uncovering more than 13 dinosaur nests filled wit

Jack Horner was eight years old when he made his first dinosaur find. Years later, he made his greatest discovery by uncovering more than 13 dinosaur nests fill

This book introduces the maiasaura, which lived in what is now Montana.

Maisaura's name means 'good mother lizard.' Find out why scientists believe these dinosaurs were such good moms.