Lower jaw of Cryptobranchus
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Urodela
Family: Cryptobranchidae
Genus: Cryptobranchus
Specimen Description
Cryptobranchus alleganiensis has a lower jaw is curved and possess numerous teeth. These teeth are small, bicuspid, and arranged in a single row. The bicuspid teeth can be seen even in the larval form of the salamander. The vomerine teeth are arranged in parallel to, and behind the premaxillary/maxillary tooth row, the premaxilla has about 16 teeth, the maxilla has about 75 teeth, the vomer about 6 teeth, and the dentary about 65 teeth.
Reference:
Berkovitz, K. B. Barry, Shellis, R. P, The Teeth of Non-Mammalian Vertebrates, Elsevier Academic Press, London, 2017.
http://animaldiversity.org/accounts/Cryptobranchus_alleganiensis/