Archegosauroidea
Encyclopedia
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
. It includes the families
Actinodontidae
and Archegosauridae
, and possibly the genus
Intasuchus
, which is placed within the monotypic
family Intasuchidae.
Permian
The PermianThe term "Permian" was introduced into geology in 1841 by Sir Sir R. I. Murchison, president of the Geological Society of London, who identified typical strata in extensive Russian explorations undertaken with Edouard de Verneuil; Murchison asserted in 1841 that he named his "Permian...
temnospondyls. The superfamily is assigned to the clade Stereospondylomorpha
Stereospondylomorpha
Stereospondylomorpha is a clade of temnospondyl amphibians. It includes the superfamily Archegosauroidea and the more diverse group Stereospondyli....
and is the sister taxon to the suborder Stereospondyli
Stereospondyli
The Stereospondyli are a group of extinct temnospondyl amphibians. Relative to other early tetrapods , they had simplified backbones, where the whole vertebra was made of a single intercentrum, topped by a neural arch. The whole vertebral structure was rather weak, meaning that most stereospondyls...
. It includes the families
Family (biology)
In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...
Actinodontidae
Actinodontidae
Actinodontidae is a family of Temnospondyli of the superfamily Archegosauroidea that lived in the Permian period....
and Archegosauridae
Archegosauridae
Archegosauridae is a family of relatively large and long snouted temnospondyls that lived in the Permian period. Most appeared and probably behaved like crocodiles.-References:...
, and possibly the genus
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...
Intasuchus
Intasuchus
Intasuchus is an extinct genus of temnospondyl amphibian....
, which is placed within the monotypic
Monotypic
In biology, a monotypic taxon is a taxonomic group with only one biological type. The term's usage differs slightly between botany and zoology. The term monotypic has a separate use in conservation biology, monotypic habitat, regarding species habitat conversion eliminating biodiversity and...
family Intasuchidae.