Mammaliaformes Rowe 1988
Period: Late Triassic - Present (237 Ma - present); Status: extant
   [crown] Class Mammalia Linnaeus, 1758 - mammals
  Period: Late Triassic - Present (237 Ma - present); Status: extant
     Subclass Theriiformes Rowe, 1988 see Division Theriiformes Rowe, 1988
    Period: Late Triassic - Present (237 Ma - present); Status: extant
       Infraclass Holotheria Wible, Rougier, Novacek, McKenna & Dashzeveg, 1995 see Clade Holotheria Wible, Rougier, Novacek, McKenna & Dashzeveg 1995
      Period: Late Triassic - Present (237 Ma - present); Status: extant
         Superlegion Trechnotheria McKenna, 1975 see Clade Trechnotheria McKenna 1975
        Period: Early Jurassic - Present (201.3 Ma - present); Status: extant
           Legion Cladotheria McKenna, 1975 see Clade Cladotheria McKenna 1975
          Period: Middle Jurassic - Present (174.1 Ma - present); Status: extant
             Sublegion Zatheria McKenna, 1975 see Clade Zatheria McKenna 1975
            Period: Middle Jurassic - Present (174.1 Ma - present); Status: extant
               Infralegion Tribosphenida McKenna, 1975 see Subclass Boreosphenida Luo, Cifelli & Kielan-Jaworowska, 2001
              Period: Early Cretaceous - Present (145 Ma - present); Status: extant
                 [crown] Supercohort Theria Parker & Haswell, 1897 - therians see Subclass Theria Parker & Haswell, 1897
                Period: Early Cretaceous - Present (145 Ma - present); Status: extant
                   Cohort Placentalia Owen, 1837 - placentals
                  Period: Early Cretaceous - Present (145 Ma - present); Status: extant
                     Magnorder Epitheria McKenna, 1975 see Cohort Placentalia Owen, 1837
                    Period: Early Cretaceous - Present (145 Ma - present); Status: extant
                       Superorder Preptotheria McKenna, 1975
                      Period: Late Cretaceous - Present (100.5 Ma - present); Status: extant
                         Grandorder Ferae Linnaeus, 1758
                        Period: Late Cretaceous - Present (100.5 Ma - present); Status: extant
                           Order Carnivora Bowdich, 1821 - carnivores
                          Period: Early Paleocene - Present (66 Ma - present); Status: extant
                             Suborder Caniformia Kretzoi, 1943
                            Status: extant
                               Infraorder Cynoidea Flower, 1869 see Infraorder Canoidea "Batsch, 1788"
                              Status: extant
                                 Family Canidae Batsch, 1788 - dogs, wolves, coyotes, jackals, and foxes
                                Distribution: cosmopolitan; Period: Middle Eocene - Present (47.8 Ma - present); Status: extant
                                   Subfamily †Hesperocyoninae Martin, 1989
                                  Status: fossil
                                     Genus †Enhydrocyon Cope, 1879
                                    Status: fossil