Phylogeny

Kingdom: Animalia
    Subkingdom: Eumetazoa
       Phylum:Chordata
          Subphylum: Vertebrata
              Class: Amphibia
                  Order: Caudata
                              Family Ambystomatidae (Mole Salaander)
                                       Ambystoma maculatum Spotted salamander
                              Family Amohiumidae (Amphiumas)
                              Family Cryptobranchidae (Hellbender and Giant Salamander)
                            Family Dicamptodontidae (Pacific Giant Salamander)
                              Family Plethodontidae (Lungless Salamander)
                                       Plethodon cinereus Redback salamander
                                       Plethodon glutinosus Slimy salamander
                                       Hemidactylium scutatum Four-toed salamander
                                       Desmognathus fuscus Northern dusky salamander
                                       Eurycea bislineata Two-lined salamander
                                       Pseudotriton ruber Northern red salamander
                                       Gyrinophilus porphyriticus Spring salamander
                              Family Proteidae (Waterdogs and Mudpuppy)
                              Family Rhyacotritonidae (Torrent Salamanders)
                              Family Salamandridae (Newts)
                                        Notophthalmus viridescens Red-spotted newt
                              Family Sirenidae (Sirens)