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Este Cmap, tiene informaciĆ³n relacionada con: Early Life on Earth, pp 170-178, Early Life in Paleozoic Era, Paleozoic Era later included Some Reptiles, Early Life began in Pre-Cambrian Era, Paleozoic Era early included Some Fish, Paleozoic Era later included Amphibians, Paleozoic Era early included Animal with shells, Animal with shells such as Brachiopods, Paleozoic Era early included Some Land plants, Paleozoic Era later included Insects, Paleozoic Era early included Worms, Pre-Cambrian Era was Single cell organisms