Archaeobatrachia

Archaeobatrachia is a suborder of Anura. It has various primitive frogs and toads. As the name literally suggests, these are the most primitive frogs. Many of the species (28 in total) show certain body features which are not in other frogs and toads. They are mostly found in Eurasia, New Zealand, the Philippines and Borneo.

Archaeobatrachia
Hochstetter's Frog (Leiopelma hochstetteri)
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Amphibia
Order:	Anura
Suborder:	Archaeobatrachia
Families
Ascaphidae Bombinatoridae Discoglossidae Leiopelmatidae

In addition, the family Ascaphidae is found in the Pacific Northwest of the United States. They are only represented by two species.

References

• Gissi, Carmela; Mauro, Diego San; Pesole, Graziano; Zardoya, Rafael (February 2006). "Mitochondrial phylogeny of Anura (Amphibia): A case study of congruent phylogenetic reconstruction using amino acid and nucleotide characters". Gene. 366 (2): 228–237. doi:10.1016/j.gene.2005.07.034. PMID 16307849.
• Roelants, Kim; Bossuyt, Franky (February 2005). "Archaeobatrachian paraphyly and pangaean diversification of crown-group frogs". Systematic Biology. 54 (1): 111–126. doi:10.1080/10635150590905894. PMID 15805014. S2CID 10677785.
• San Mauro, Diego; Garcia-Paris, Mario; Zardoya, Rafael (December 2004). "Phylogenetic relationships of discoglossid frogs (Amphibia:Anura:Discoglossidae) based on complete mitochondrial genomes and nuclear genes". Gene. 343 (2): 357–366. doi:10.1016/j.gene.2004.10.001. PMID 15588590.
• San Mauro, Diego; Vences, Miguel; Alcobendas, Marina; Zardoya, Rafael; Meyer, Axel (May 2005). "Initial diversification of living amphibians predated the breakup of Pangaea". American Naturalist. 165 (5): 590–599. doi:10.1086/429523. PMID 15795855. S2CID 17021360. Archived from the original on 2012-12-05. Retrieved 2012-08-20.