Archaeobatrachia

Archaeobatrachia Temporal range: Early Jurassic to present, 200–0 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Hochstetter's frog (Leiopelma hochstetteri)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Amphibia
Order:	Anura
Suborder:	Archaeobatrachia
Families
Ascaphidae Bombinatoridae Alytidae (Discoglossidae) Leiopelmatidae †Notobatrachus

Archaeobatrachia (Neo-Latin archaeo- ("old") + batrachia ("frog")) is a suborder of the order Anura containing various primitive frogs and toads. As the name suggests, these are the most primitive frogs. Many of the species (28 in total) show certain physiological characteristics^{[clarification needed]} which are not present in other frogs and toads, thus giving rise to this group. They are largely found in Eurasia, New Zealand, the Philippines, and Borneo, and are characteristically small. In addition, the family Ascaphidae is found in the Pacific Northwest and northern Rocky Mountains of the United States, and is only represented by two species. The taxon is considered paraphyletic.^{[citation needed]}