Facts On File - Lost Creatures of the Earth (The Living Earth)
Species living on Earth today represent a mere fraction of the total amount of life forms that have existed since the planet was first formed. Part of the "Living Earth" series, this resource is designed for anyone requiring information on the latest in historical geology, the study of the evolution of the Earth and its developing life forms. A general introduction details the various ages of the Earth, from the age of bacteria to the era of mammals that we know today. Subsequent chapters illustrated with more than 150 photographs, maps, and diagrams cover: sea life; land life; mass extinctions; causes of extinctions; effects of extinction; evolution of species; the life cycles; unique life forms; and strange habitats.