Leptodactylus latinasus

Leptodactylus latinasus (common name: oven frog, in Spanish "urnero") is a species of frog in the family Leptodactylidae.
It is found in the Gran Chaco of northern Argentina, Bolivia, and Paraguay and east and south to southern Brazil and Uruguay.
Its natural habitats are subtropical or tropical grasslands near waterbodies. It tolerates anthropogenic disturbance well. It breeds in underground chambers. This abundant and adaptable species is not facing any important threats.
It is now known to have kneecaps, a feature previously unknown in amphibians and thought to have evolved in different taxonomic classes, the reptile and the mammal.