The unrelated corrugated frog (Limnonectes laticeps) of Southeast Asia is occasionally also called "flat-headed frog".The flat-headed frog (Limnodynastes depressus) is a species of frog in the family Limnodynastidae.It is endemic to Australia.Its natural habitats are subtropical and tropical dry lowland grassland and freshwater marshes.It is threatened by habitat loss.