original: Life in the swamps The first tetrapods are now thought to have evolved in shallow and swampy freshwater habitats, towards the end of the Devonian, a little more than 365 million years ago.
simplifications: The first tetrapods are thought to have evolved in shallow and swampy freshwater habitats, towards the end of the Devonian, a little more than 365 million years ago. The first tetrapods have appeared in shallow and swampy freshwater areas more than 365 million years ago. The first tetrapods are now thought to have grown in shallow and swampy freshwater habitats. This would've happened at the end of the Devonian or a little more than 365 million years ago. Life in the swamps: The first tetrapods are now thought to have evolved in shallow and swampy freshwater habitats. This may have been near the end of the Devonian, a little more than 365 million years ago. The first tetrapods are thought to have evolved in shallow and swampy freshwater habitats, towards the end of the Devonian, more than 365 million years ago. People believe the first four-legged animals evolved in shallow and swampy areas a little more than 365 million years ago. The first tetrapods evolved in shallow and swampy freshwater habitats, towards the end of the Devonian, more than 365 million years ago. The first tetrapods are believed to have evolved in shallow and swampy freshwater habitats. This was towards the end of the Devonian, about 365 million years ago. The first tetrapods are thought to have evolved in shallow and swampy freshwater habitats more than 365 million years ago. This is towards the end of the Devonian. Life in the Swamps The first tetrapods are now thought to have developed into shallow and swampy freshwater habitats towards the end of the Devonian Sea, a little over 365 million years ago.