[Phylum] Chordata Bateson, 1885 - chordates
   Subphylum Craniata auct.
     Infraphylum Vertebrata Lamarck, 1801 - vertebrates
       Superclass Gnathostomata Gegenbaur, 1874 - jawed vertebrates
         Class Osteichthyes Huxley, 1880 - bony fishes and tetrapods see Clade Osteichthyes Huxley 1880 [Moore & Near 2020]
           Subclass Actinopterygii Woodward, 1891 - ray-finned fishes see Class Actinopterygii Woodward, 1891
             Infraclass Actinopteri Cope, 1871 see Class Actinopteri Cope, 1871
               Superdivision Neopterygii Regan, 1923 see Subclass Neopterygii Regan, 1923
                 Superdivision Teleosteomorpha Arratia, 2001 see Infraclass Teleosteomorpha Arratia, 2001
                   Division Teleostei Müller, 1845
                     Cohort Clupeocephala Patterson & Rosen, 1977
                       Subcohort Euteleosteomorpha Greenwood et al., 1966
                         Infracohort Neoteleostei Nelson, 1969
                           Supersection Eurypterygia Rosen, 1973
                             Section Ctenosquamata Rosen, 1973
                               Subsection Acanthomorphata Rosen, 1973
                                 Division Acanthopterygii Rosen & Patterson, 1969
                                   Subdivision Percomorphaceae
                                     Series Ovalentaria Smith & Near, 2012
                                       Superorder Atherinomorphae Greenwood et al., 1966
                                         Order Cyprinodontiformes Berg, 1940 - killifishes
                                           Suborder Cyprinodontoidei
                                             01 Family Pantanodontidae Myers, 1955 - spine killifishes
                                             02 Family Cyprinodontidae Wagner, 1828 - killifishes
                                             03 Family Fundulidae Günther, 1866 - topminnows and killifishes
                                             04 Family Orestiidae Bleeker, 1859 see Subfamily Orestiinae Bleeker, 1859
                                             05 Family Profundulidae Hoedeman & Bronner, 1951 - Middle American killifishes
                                             06 Family Goodeidae Jordan & Gilbert, 1883 - splitfins
                                             07 Family Valenciidae Parenti, 1981 - European killifishes
                                             08 Family Aphaniidae Hoedeman, 1949 - Oriental killifishes
                                             09 Family Procatopodidae Fowler, 1916 - African lampeyes
                                             10 Family Fluviphylacidae Roberts, 1970 - American lampeyes
                                             11 Family Poeciliidae Bonaparte, 1831 - poeciliids
                                             12 Family Anablepidae Bonaparte, 1831 - four-eyed fishes and onesided livebearers