Ranidae

The Ranidae or true frogs can be found in most countries except Antarctica. The true frogs can be found in North America, northern South America, Europe, Asia, Madagascar, Africa, East Indies, New Guinea, and Australia. The bullfrog is the largest true frog in North America. Usually, true frogs are smooth, moist-skinned frogs, with large, powerful legs and have webbed feet. The smallest true frogs are the Wood frog (Rana sylvatica). The largest is the Goliath frog (Conraua goliath). True frogs are semi-aquatic frogs. They live near water.
Subfamilies
Subfamilies included under Ranidae are the following. Some are sometimes treated as separate families:
Ceratobatrachinae (Malaysia, Philippines, Borneo, Papua New Guinea, Bismarck Archipelago)
Conrauinae (Africa)
Dicroglossinae
Micrixalinae (India)
Nyctibatrachinae (Western Ghats, India; Sri Lanka)
Petropedetinae (Africa)
Ptychadeninae (mainly Africa)
Raninae
Ranixalinae (India)
Genera
Afrana
Allopaa Ohler & Dubois, 2006
Amietia
Amolops
Anhydrophryne
Arthroleptella
Arthroleptides
Aubria
Babina (sometimes included in Rana)
Batrachylodes
Cacosternum
Ceratobatrachus
Chaparana
Chrysopaa Ohler & Dubois, 2006
Clinotarsus Mivart 1869 (formerly in Rana, includes Nasirana)
Conraua
Dimorphognathus
Discodeles
Ericabatrachus
Euphlyctis
Fejervarya (formerly in Rana, paraphyletic)
Fagayman
Glandirana (formerly in Rana)
Hildebrandtia
Hoplobatrachus
Huia (polyphyletic)
Hylarana Tschudi 1838 (formerly in Rana)
Indirana
Ingerana
Lankanectes
Lanzarana
Limnonectes
Meristogenys (might belong in Huia)
Micrixalus
Microbatrachella
Minervarya
Nannophrys
Nanorana
Natalobatrachus
Nothophryne
Nyctibatrachus
Occidozyga
Odorrana (formerly in Rana)
Paa
Palmatorappia
Pelophylax Fitzinger 1843 (formerly in Rana, probably paraphyletic)
Petropedetes
Phrynobatrachus
Phrynodon
Platymantis
Pseudoamolops
Poyntonia
Pterorana
Ptychadena
Pyxicephalus
Rana
Sanguirana (formerly in Rana)
Sphaerotheca
Staurois
Strongylopus
Sylvirana
Tomopterna
Books
(2007): Paraphyly of Chinese Amolops (Anura, Ranidae) and phylogenetic position of the rare Chinese frog, Amolops tormotus. Zootaxa 1531: 49-55. PDF fulltext
(2004): Encyclopedia of Reptiles & Amphibians (2nd ed.). Fog City Press.
(2006): Amphibian Species of the World Version 3 - Petropedetidae Noble, 1931. American Museum of Natural History, New York, USA. Retrieved 2006-AUG-05.
(2006): The amphibian tree of life. Bulletin of the American Museum of Natural History. Number 297. New York.
(1961): Osmotic Regulation in the Crab-Eating Frog (Rana cancrivora). J. Exp. Biol. 38(3): 659-678. PDF fulltext
(2007) Constraints in naming parts of the Tree of Life. Molecular Phylogenetics and Evolution 42(2): 331-338. PDF fulltext
(2005): Phylogeny of the New World true frogs (Rana). Mol. Phylogenet. Evol. 34(2): 299-314. PDF fulltext
(2008): Genetic Divergences and Phylogenetic Relationships Among the Fejervarya limnocharis Complex in Thailand and Neighboring Countries Revealed by Mitochondrial and Nuclear Genes. Zoological Science 25(4): 381-390. (HTML abstract)
(2009): Taxonomic freedom and the role of official lists of species names. Herpetologica 65: 115-128. PDF fulltext
(2008): The phylogenetic problem of Huia (Amphibia: Ranidae). Molecular Phylogenetics and Evolution 46(1): 49-60. PDF fulltext
Other websites
Amphibian and Frogs of Peninsular Malaysia - Family Ranidae
Frogs
Palaeozoic