Major subgroups of amphibians

This is a traditional classification of amphibians, based only partially on cladistic analyses.

Class/Order Description When found

Class Amphibia

Subclass Bactrachomorpha

Order Nectridea Small slender aquatic forms Early Carboniferous to Late Permian

Order Microsauria Terrestrial and aquatic long-bodied forms with deep skulls Early Carboniferous to Late Permian

Order Temnospondyli Broad-snouted, low-skulled forms, with a range of sizes Early Carboniferous to Early Cretaceous

Infraclass Lissamphibia Anurans (frogs), urodeles (salamanders) and gymnophionans (caecilians) Early Triassic to Recent

Subclass Reptiliomorpha

Order Anthracosauria Narrow-skulled fish-eating amphibians Early Carboniferous to Late Permian

Order Seymouriamorpha High-skulled terrestrial amphibians Late Carboniferous to Late Permian

For more information about modern groups see this page
For more information about fossil groups see this page
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Class/Order	Description	When found
Class Amphibia
Subclass Bactrachomorpha
Order Nectridea	Small slender aquatic forms	Early Carboniferous to Late Permian
Order Microsauria	Terrestrial and aquatic long-bodied forms with deep skulls	Early Carboniferous to Late Permian
Order Temnospondyli	Broad-snouted, low-skulled forms, with a range of sizes	Early Carboniferous to Early Cretaceous
Infraclass Lissamphibia	Anurans (frogs), urodeles (salamanders) and gymnophionans (caecilians)	Early Triassic to Recent
Subclass Reptiliomorpha
Order Anthracosauria	Narrow-skulled fish-eating amphibians	Early Carboniferous to Late Permian
Order Seymouriamorpha	High-skulled terrestrial amphibians	Late Carboniferous to Late Permian