An all-inclusive catalogue of the world's living diversity, Five Kingdoms defines and describes the major divisions of nature's five great kingdoms-bacteria, protoctists, animals, fungi, and plants-using a modern classification scheme that is consistent with both the fossil record and molecular data. Generously illustrated and easy to follow, it not only allows students to sample the full range of life forms inhabiting our planet but to familiarize themselves with the taxonomic theories by which all organisms' origins and distinctive characteristics are traced and classified.This completely revised and updated third edition includes an introduction by Stephen Jay Gould.* New ideas on molecular systematics, symbiogenisis, and the place of microbes in the evolution of life* Newly expanded chapter openings that define each kingdom and place its members in context in time and space* Definitions of terms in the glossary and, now, also appropriately placed throughout the book* A new table comparing the main features of each kingdom, showing the logic of the overall classification scheme* A list of prehistoric dioramas in science museums and in U.S. national parks and monuments guiding readers to trips to the past* A list of websites directing students to additional information