Archegosauroidea

Archegosauroidea is an extinct superfamily of Permian temnospondyls. The superfamily is assigned to the clade Stereospondylomorpha and is the sister taxon to the suborder Stereospondyli.[1] It includes the families Actinodontidae and Archegosauridae, and possibly the genus Intasuchus, which is placed within the monotypic family Intasuchidae. They were fully aquatic animals, and were metabolically and physiologically more similar to fish than modern amphibians.[2]

Archegosauroidea Temporal range: Pennsylvanian to Late Permian, 301–251.902 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Prionosuchus
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Order:	†Temnospondyli
Clade:	†Stereospondylomorpha
Superfamily:	†Archegosauroidea Lydekker, 1885
Families
Sclerocephalidae Archegosauridae ?Intasuchidae

References

1. Yates, A. M.; Warren, A. A. (2000). "The phylogeny of the "higher temnospondyls" (Vertebrata, Choanata)". Zoological Journal of the Linnean Society. 128: 77–121. doi:10.1111/j.1096-3642.2000.tb00650.x.
2. Florian Witzmann; Elizabeth Brainerd (2017). "Modeling the physiology of the aquatic temnospondyl Archegosaurus decheni from the early Permian of Germany". Fossil Record. 20 (2): 105–127. doi:10.5194/fr-20-105-2017.