Gone forever!

10 volumes, from the series Gone forever!, which describe what has been learned about the physical features, behavior, and surroundings of some long-extinct animals.

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 sabre-tooth tiger.

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

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

Describes what has been learned about the physical appearance, behavior, and surroundings of the long-extinct woolly mammoth.

Describes what has been learned about the size, behavior, and surroundings of the long-extinct dinosaur known as diplodocus.

Discusses the history of the passenger pigeon, which at one time made up one-quarter of the birds of America but is now extinct.

Describes how the Great Auk lived before its extinction in the mid 1800s and discusses the physical characteristics, habits, and breeding of other members of the Auk family and laws to protect these rare birds.

Describes what is known of the sabertooth, based on fossilized remains discovered by paleontologists.