Kalmar "Family Cryptobranchidae" tana nufin dangin taxonomic na manyan salamanders na ruwa, wanda aka fi sani da giant salamanders ko hellbenders. Wannan iyali ya ƙunshi nau'i biyu na zamani, Cryptobranchus da Andrias, waɗanda ake samu a Gabashin Asiya da Arewacin Amirka. Ana siffanta su da lallausan jikinsu, girman girmansu, da wutsiyoyi masu tsayi, kuma ana ɗaukar su a matsayin burbushin halittu saboda dadewarsu na juyin halitta.