The family Calyptocephalellidae is confined to Chile, and contains two genera,
Calyptocephalella and Telmatobufo. Calyptocephalella gayi
, the Helmeted Water Toad, is the sole species within its genus and was
formerly known as Caudiverbera caudiverbera. Helmeted Water Toads are
quatic frogs, with females reaching up to 320 mm SVL. The other genus within
this family, Telmatobufo, contains three species which live in or next
o fast-flowing streams in temperate Nothofagus forest and are very
rarely encountered (Telmatobufo venustus has been recorded once in the
This family has undergone taxonomic revision since it was originally named
Batrachophrynidae (Frost et al. 2006), but then had to be renamed to
halellidae (Frost 2007) when it was realized that prior karyotypic work by
Córdova and Descailleaux (2005) had suggested that the genus
Batrachophrynus was actually aligned with Telmatobius and thus nested within the
> family Ceratophryidae.
Photo by José Grau
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Córdova, J. and Descailleaux, J. (2005), in Lavilla, E. O., and De la
Riva, I. (Eds.) 2005. Studies on the Andean frogs of the genera
and Batrachophrynus. Asociación HerpetológicEspañola, Monografías
de Herpetología 7, Valencia, Spain.
Frost, D. R., Grant, T., Faivovich, J., Bain, R. H., Haas, A., Haddad, C.
F. B., de Sá, R. O., Channing, A., Wilkinson, M., Donnellan, S. C.,
C. J., Campbell, J. A., Blotto, B. L., Moler, P., Drewes, R. C., Nussbaum, R.
A., Lynch, J. D., Green, D. M., and Wheeler, W. C. (2006). The amphibian tree
f life. Bulletin of the American Museum of Natural History, 297, 1-370.
Frost, D. R. (2007). Amphibian Species of the World Online, version 5.0.