After Carroll, 1988

<==o Holocephalimorpha
   |?- †Chondrenchelyidae [Chondrenchelyiformes]
   `--+?- †Psammodontidae [Psammodontiformes]
      |?- †Cochliodontidae [Cochliodontiformes]
      |?- †Menaspidae [Menaspiformes]
      `--+?- †Copodontidae [Copodontiformes]
         `--o CHIMAERIFORMES (ratfishes; sillikuningaskalat)
            |--o †Myriacanthodei
            |  |-- †Acanthorhinidae
            |  |-- †Chimaeropsidae
            |  `-- †Myriacanthidae
            `--+-- †Echinochimaeridae [Echinochimaroidei]
               `--o Chimaeroidei
                  |-- †Edaphodontidae
                  |-- Callorhinchidae (kärsäkuninkaat)
                  |-- Rhinochimaeridae (nokkakuninkaat)
                  `-- Chimaeridae (sillikuninkaat)

Reference(s):