cryptobranchids in a sentence
1. A number of fossil cryptobranchids have been found, but there are only three living species, the Chinese giant salamander (Andrias davidianus), the Japanese giant salamander (Andrias japonicus) and the hellbender (Cryptobranchus alleganiensis) from North America.
2. They differ from the cryptobranchids by having fused prearticular bones in the lower jaw, and by using internal fertilisation.
3. Cryptobranchids are large salamanders, with large folds of skin along their flanks.