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Tetrapod Vertebrates Research Paper

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Amphibians were the first tetrapod vertebrates as well as the first vertebrates to live on land. During this interval, this lineage of fleshy-finned organisms moved from the water to the land. • Many parts of the skeleton changed as new innovations that permitted life on land evolved. For example, the ancestors lived fully in the water and had skulls that were tall and narrow, with eyes facing sideways and forwards. This allowed them to look around in their watery environments for predators and prey. However, as ancestors of the first tetrapods began to live in shallower waters, their skulls evolved to be flatter, with eyes on the tops of their heads. This probably allowed them to look up to spot food. Then, as tetrapods finally moved fully

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