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