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.
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.