This book is a pioneering study of the evolutionary history of the animal kingdom, written by one of the leading French paleontologists of the early 20th century. The author traces the development of life on Earth from the earliest multicellular organisms to the emergence of complex mammals, birds, and other animals we know today. With stunning illustrations, diagrams, and maps, this book is an essential reference for anyone interested in the science of evolution and the beauty and diversity of the natural world.

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it.

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