family cryptobranchidae การใช้

• They are closely related to the giant salamanders ( family Cryptobranchidae ), with which they form the suborder Cryptobranchoidea.
• A member of the family Cryptobranchidae, hellbenders are the only members of the genus " Cryptobranchus ", and are joined only by one other genus of salamanders ( " Andrias ", which contains the niche both as a predator and prey in their ecosystems, which either they or their ancestors have occupied for around 65 million years.