Gone forever!

Describes what is known of this prehistoric ancestor of the elephant, based on the preserved remains of mammoth bodies.

Discusses the flightless bird that lived on the island of Mauritius and why it became extinct in the 1600s. Also describes the efforts of conservationists to protect endangered birds.

Describes what has been learned about the physical features, behavior, and surroundings of the long-extinct velociraptor.

Describes what has been learned about the physical features, behavior, and surroundings of the long-extinct stegosaurus.

Describes what has been learned about the physical features, behavior, and surroundings of the long-extinct pterodactyl.

Describes what has been learned about the physical features, behavior, and surroundings of the long-extinct iguanodon.

Discusses the dinosaur Baryonyx, including its known physical characteristics, behavior, habitat, and what other creatures were contemporaneous with it, as well as how scientists study fossils and evaluate geological features to learn about extinct organisms.

Discusses the dinosaur Seismosaurus, including its known physical characteristics, behavior, habitat, and what other creatures were its contemporaries, as well as how scientists study fossils and evaluate geological features to learn about extinct organisms.

Discusses the dinosaur Troodon, including its known physical characteristics, behavior, habitat, and what other creatures were contemporaneous with it, as well as how scientists study fossils and evaluate geological features to learn about extinct organisms.

Discusses the apatosaurus dinosaur, including its known physical characteristics, behavior, habitat, and what other creatures were its contemporaries, as well as how scientists study fossils and evaluate geological features to learn about extinct organisms.