Classification of the genus Cryptobranchus
G. Cryptobranchus Leuckart 1821 [hellbender]
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Cryptobranchus alleganiensis Daudin 1803 [hellbender]
†Cryptobranchus guildayi Holman 1977
†Cryptobranchus saskatchewanensis Naylor 1981
Invalid names: Plicagnathus Cook 1917 [synonym], Sieboldia Blanchard 1871 [synonym]