Cycloramphidae

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.

Thoropa is a genus of frogs in the family Cycloramphidae. They are endemic to eastern and southeastern Brazil. They are sometimes known as river frogs.

The Cycloramphidae are a family of frogs endemic to southeastern Brazil. This family has seen large changes in its composition. Genera that have at some point been included in the Cycloramphidae are at present placed in the Alsodidae, Hylodidae, Leptodactylidae, and Rhinodermatidae. Of these, the Alsodidae and/or Hylodidae have also been considered as subfamilies of Cycloramphidae (as, respectively, Alsodinae and Hylodinae); the Cycloramphidae, as recognized at present, would be similar to subfamily Cycloramphinae under such system.

Zachaenus is a genus of frogs in the family Cycloramphidae. There are two species that both are endemic to southeastern Brazil. Common name bug-eyed frogs has been coined for the genus.