Cacosternum is a genus of frog in the family Pyxicephalidae that are found in southern and eastern Africa. They have many common names, including cacos, dainty frogs, and metal frogs.
123Frost, Darrel R. (2014). "Cacosternum Boulenger, 1887". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 3 May 2014.
↑"Pyxicephalidae". AmphibiaWeb: Information on amphibian biology and conservation. [web application]. Berkeley, California: AmphibiaWeb. 2014. Retrieved 3 May 2014.
↑Frost, Darrel R. (2014). "Cacosternum nanum Boulenger, 1887". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 3 May 2014.