Jennifer A. Clack
James O. Farlow
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Around 370 million years ago, a distant relative of a modern lungfishbegan a most extraordinary adventure -- emerging from the water and laying claim tothe land. Over the next 70 million years, this tentative beachhead had developedinto a worldwide colonization by ever-increasing varieties of four-limbed creaturesknow as tetrapods, the ancestors of all vertebrate life on land. This new edition ofJennifer A. Clack's groundbreaking book tells the complex story of their emergenceand evolution. Beginning with their closest relatives, the lobe-fin fishes such aslungfishes and coelacanths, Clack defines what a tetrapod is, describes theiranatomy, and explains how they are related to other vertebrates. She looks at theDevonian environment in which they evolved, describes the known and newly discoveredspecies, and explores the order and timing of anatomical changes that occurredduring the fish-to-tetrapod transition.
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