This magnificent book is the magnum opus of Robert L. Carroll, the summary of his 40-year research program on the tetrapods of the Paleozoic Era. His research, starting with his thesis on the dissorophoids of the Permian red beds of Texas, continuing through his current work on Mesozoic salamanders from Mongolia, and including the projects of his graduate students, forms the central theme of this comprehensive volume on the history of amphibians. This book goes beyond the comparative morphology of fossil and extant amphibians—which would itself be an invaluable contribution—by synthesizing aspects of physiology, behavior, ecology, and developmental genetics into an unparalleled grand evolutionary narrative documenting the history of non-amniote tetrapods. This work belongs on the shelf of every herpetologist.

Carroll is one of the last of the evolutionary taxonomists, in the mold of his professors A. S. Romer, G....

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