Chordata Bateson, 1885 - chordates
   Class Elasmobranchii Bonaparte, 1838 see Subclass Elasmobranchii Bonaparte, 1838
     Subclass Holocephali Bonaparte, 1832
       Order Chimaeroidei see Order Chimaeriformes Obruchev, 1953
         87 Family †Ptyctodontidae Woodward, 1891
         88 Family †Squaloraiidae
         89 Family †Myriacanthidae Woodward, 1889
         90 Family Chimaeridae Rafinesque, 1815 - shortnose chimaeras
         91 Family Rhinochimeridae Jordan, 1923, nom. null. see Family Rhinochimaeridae Garman, 1901
         92 Family Callorhynchidae Garman, 1901 [monotypic] see Family Callorhinchidae Garman, 1901