(Cycloramphus izecksohni)
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.