Hyloxalus fuliginosus is a species of frog in the family Dendrobatidae. It may be endemic to Ecuador where it is known from the Amazonian slopes of the Andes in the northern Ecuador, with some sources reporting it from Colombia and Venezuela.
Ololygon alcatraz is a species of frog in the family Hylidae. It is endemic to Ilha dos Alcatrazes, an island off the coast of São Paulo state, Brazil. Common name Alcatraz snouted Treefrog has been coined for it.
Cycloramphus is a genus of frogs in the family Cycloramphidae. The genus is endemic to the southeastern Brazil. They are sometimes known as the button frogs.
Cycloramphus asper is a species of frog in the family Cycloramphidae. It is endemic to Brazil. Its natural habitats are subtropical or tropical moist lowland forest and rivers.
Cycloramphus bolitoglossus is a species of frog in the family Cycloramphidae. It is endemic to Brazil. Its natural habitat is subtropical or tropical moist lowland forests. It is threatened by habitat loss.
Cycloramphus boraceiensis is a species of frog in the family Cycloramphidae. It is endemic to Brazil. Its natural habitats are subtropical or tropical moist lowland forest and rivers. It is threatened by habitat loss.
Cycloramphus brasiliensis is a species of frog in the family Cycloramphidae. It is endemic to Brazil. Its natural habitats are subtropical or tropical moist lowland forest, subtropical or tropical moist montane forest, and rivers. It is threatened by habitat loss.
Cycloramphus carvalhoi is a species of frog in the family Cycloramphidae. It is endemic to Brazil. Its natural habitat is subtropical or tropical moist montane forest.
Cycloramphus diringshofeni is a species of frog in the family Cycloramphidae. It is endemic to Brazil. Its natural habitat is subtropical or tropical moist lowland forest.
Cycloramphus dubius is a species of frog in the family Cycloramphidae. It is endemic to the state of São Paulo, Brazil. Common name São Paulo button frog has been coined for it.
Cycloramphus duseni is a species of frog in the family Cycloramphidae. It is endemic to southern Brazil and only known from its type series collected in 1911 from near Casa Ypiranga along the Curitiba–Paranaguá railway, in the Serra do Mar, Paraná state. Prior to naming of Cycloramphus izecksohni in 1983, it was confused with this species. The specific name duseni honors Per Dusén, Swedish naturalist who collected the type series. Common name Ypiranga button frog has been coined for this species.
Cycloramphus eleutherodactylus is a species of frog in the family Cycloramphidae. It is endemic to the Serra do Mar in southeastern Brazil, including the Serra dos Órgãos, Serra da Mantiqueira, and Serra da Bocaina. Common name Alto button frog has been coined for it.
Cycloramphus granulosus is a species of frog in the family Cycloramphidae. It is endemic to Brazil. Its natural habitats are subtropical or tropical moist lowland forest and rivers.
Cycloramphus izecksohni is a species of frog in the family Cycloramphidae. It is endemic to southern Brazil and occurs in the Serra do Mar in the states of Santa Catarina, Paraná, and São Paulo. Prior to its description in 1983, it was confused with Cycloramphus duseni. Common name Izecksohn's button frog has been coined for this species.
Cycloramphus lutzorum is a species of frog in the family Cycloramphidae. It is endemic to Brazil. Its natural habitats are subtropical or tropical moist lowland forest, rivers, and rocky areas. It is threatened by habitat loss.
Cycloramphus mirandaribeiroi is a species of frog in the family Cycloramphidae. It is endemic to Brazil. Its natural habitats are subtropical or tropical moist lowland forests and rivers. Its population is in decline.
Cycloramphus ohausi is a species of frog in the family Cycloramphidae. It is endemic to Serra dos Órgãos in southeastern Brazil. The specific name ohausi honors Friedrich Ohaus, a German physicist and herpetologist. Common name Wandolleck's button frog has been proposed for this species.
Cycloramphus rhyakonastes is a species of frog in the family Cycloramphidae. It is endemic to Brazil. Its natural habitat is subtropical or tropical moist lowland forest. It is threatened by habitat loss.
Cycloramphus stejnegeri is a species of frog in the family Cycloramphidae. It is endemic to the Serra dos Órgãos in southeastern Brazil. The specific name stejnegeri honors Leonhard Stejneger, a Norwegian–American herpetologist and ornithologist. Common name Stejneger's button frog has been coined for this species.
Cycloramphus faustoi is a species of frog in the family Cycloramphidae. It is endemic to Ilha dos Alcatrazes, a small island about 35 km off the coast of São Paulo state, Brazil.
