The Calyptocephalellidae are a family of toads found in Chile containing two genera, Calyptocephalella and Telmatobufo. The Calyptocephalella genus contains one species, C. gayi, the helmeted water toad, which is a large aquatic toad weighing up to 0.5 kg (1.1 lb). The Telmatobufo genus contains four species, T. australis, T. bullocki, T. ignotus, and T. venustus. All species within the family are considered endangered, with T. bullocki and T. venustus being classified as critically endangered.
- Frost, Darrel R. (2013). "Calyptocephalellidae, Reig 1960". Amphibian Species of the World 6.0, an Online Reference. American Museum of Natural History. Retrieved 19 September 2014.
- Donoso, Denise S.; Corres, Claudio Q.; Henriquez, Paula; Lagos, Nicolas F. and Mendez, M.A. (2010). "Amphibia, Anura, Calyptocephalellidae, Telmatobufo bullocki Schmidt, 1952: Distribution extension, habitat use and geographic distribution map.". Checklist, Journal of Species Lists and Distribution 6 (2): 298–300.
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