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The top documents tagged [early amphibians]
Encyclopedia of Life Amphibians. Amphibians are cold-blooded animals that metamorphose from a young, water-breathing form to an adult, air-breathing form
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Earth Science 13.2B Paleozoic Era : Life explodes Paleozoic Era : Life Explodes: Part B
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Reptiles & Birds Chapter 31. Reptiles What is a Reptile? Snakes, turtles, alligators, and lizards are an extremely diverse group of animals, yet all
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The Skull and Visceral Skeleton
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The Skull and Visceral Skeleton
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