A group (or subclass) comprising amphibians that were primitive in character and from a few centimetres to several metres long. The bones forming the palate often carried the folded teeth that give the subclass its name. They lived during the Palaeozoic and Triassic. Labyrinthodonts show affinities with Crossopterygii and with reptiles, and are connected to other amphibians via such fossil groups as the Loxomammatids, Nectrideans, and Temnospondyla. The modern tendency is to regard the labyrinthodonts as an informal assemblage of primitive amphibians, rather than as a formal taxonomic group.
Subjects: Zoology and Animal Sciences.