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The Southern Frogs form Leptodactylidae, a diverse family of frogs that probably diverged from other hyloids during the Cretaceous. Of the roughly 50 genera, one, ''Eleutherodactylus'', is the largest vertebrate genus, with over 700 species. In total, the approximately 1100 leptodactylid species are widely distributed throughout Mexico, the Caribbean, and Central and South America. The family is often considered paraphyletic and has no morphological synapomorphies.〔(【引用サイトリンク】 title=AmphibiaWeb: Information on Amphibian Biology and Conservation )〕 The family includes terrestrial, burrowing, aquatic, and arboreal members, inhabiting a wide range of different habitats. Several of the genera within Leptodactylidae lay their eggs in foam nests. These can be in crevices, on the surface of water, or on forest floors. These foam nests are some of the most varied among frogs. When eggs hatch in nests on the forest floor, the tadpoles remain within the nest, without eating, until metamorphosis. In the genus ''Eleutherodactylus'', the eggs undergo direct development and hatch directly into miniature frogs, with no free-living tadpole stage.〔 Leptodactylids are well represented in the fossil record, and one specimen from the genus ''Eleutherodactylus'' was wholly preserved in amber 37 million years ago.〔 == Classification == As of mid 2015, the Amphibian Species of the World uses the following classification: * Leiuperinae Bonaparte, 1850 (90 species) * * ''Edalorhina'' Jiménez de la Espada, 1870 * * ''Engystomops'' Jiménez de la Espada, 1872 * * ''Physalaemus'' Fitzinger, 1826 * * ''Pleurodema'' Tschudi, 1838 * * ''Pseudopaludicola'' Miranda-Ribeiro, 1926 * Leptodactylinae Werner, 1896 (1838) (96 species) * * ''Adenomera'' Steindachner, 1867 * * ''Hydrolaetare'' Gallardo, 1963 * * ''Leptodactylus'' Fitzinger, 1826 * * ''Lithodytes'' Fitzinger, 1843 * Paratelmatobiinae Ohler and Dubois, 2012 (13 species) * * ''Crossodactylodes'' Cochran, 1938 * * ''Paratelmatobius'' Lutz and Carvalho, 1958 * * ''Rupirana'' Heyer, 1999 * * ''Scythrophrys'' Lynch, 1971 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Leptodactylidae」の詳細全文を読む スポンサード リンク
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