A stem batrachian from the Early Permian of Texas and the origin of frogs and salamanders

Anderson and colleagues describe a fossil amphibian from the Early Permian of Texas that has the chassis of a temnospondyl but with the addition of many features seen in modern frogs, toads and salamanders. A phylogenetic analysis splits modern Amphibia into two groups, with frogs, toads and salamanders related to temnospondyls, and caecilians to leopspndyls.