†suborder Diadectoidea Romer 1956 (tetrapod)
Synonym: Diadecta Olson 1947
Parent taxon: Diadectomorpha according to O. W. M. Kuhn 1966
See also Olson 1947
Sister taxa: Diadectidae, Limnoscelidae, Limnoscelops, Limnoscelops longifemur, Millerinidae, Tseajaiidae
Subtaxa: Korynichniidae Stephanospondylidae
Ecology:
Distribution: found only at Niederhaslich (Permian of Germany)