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   Amphibians Class Amphibia   Amphibians ã  Animals that can live on land and in water  Chinese Giant Salamander    Amphibians ã First animals with four limbs ã Tetrapods: vertebrates that have four limbs.   Acanthostega ã Found in 360 million year-old rocks in Greenland ã Had lungs and eight-toed legs, but also had gills and a lateral line system.
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