Stereospondylomorpha

Stereospondylomorpha Temporal range: Early Permian–Early Cretaceous PreЄ Є O S D C P T J K Pg N
Life restoration of Prionosuchus plummeri
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Order:	†Temnospondyli
Clade:	†Limnarchia
Clade:	†Stereospondylomorpha Yates and Warren, 2000
Clades
†Archegosauroidea †Stereospondyli

Stereospondylomorpha is a clade of temnospondyls. It includes the superfamily Archegosauroidea and the more diverse group Stereospondyli. Stereospondylomorpha was first proposed by Yates and Warren (2000), who found Archegosauroidea and Stereospondyli to be sister taxa in their phylogenetic analysis. A similar clade is Archegosauriformes, named by Schoch and Milner (2000), which includes Stereospondyli and some Permian temnospondyls that are similar in appearance to stereospondyls, including the archegosauroids. However, according to Schoch and Milner's phylogeny, Archegosauroidea is a paraphyletic group of taxa that are successively basal to Stereospondyli, rather than a monophyletic sister taxon.