Temnospondyli
Temnospondyli (from Greek τέμνειν, temnein = "to cut" + σπόνδυλος, spondylos = "vertebra") is an important and extremely diverse taxon of small to giant primitive amphibians that flourished worldwide during the Carboniferous, Permian, and Triassic periods. A few stragglers continued into the modern times of the Different World. During their evolutionary history they adapted to a very wide range of habitats, including fresh-water aquatic, semi-aquatic, amphibious, terrestrial, and in one group even near-shore marine, and their fossil remains have been found on every continent.