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Vertebrates Living on Land and in Water - Vertebrates SlideshowEventually vertebrates began to develop traits that took them out of the water. These changes offered a complete life on land as opposed to short-term survival. This next step in vertebrate advancement happed near freshwater ponds, lakes, and wetlands across the warmer areas of the Earth. Amphibians became the kings of the land. While there were many invertebrate species and plants of all types, nothing quite like amphibians had been around. 350 million years ago, the first slimy creatures began to emerge and found ready food sources on dry land with no natural predators. They were still small creatures (no dinosaurs yet), but their physiology changed history. Image Credit: Andrew Rader Studios |
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