Phylum Chordata Bateson, 1885 - chordates
   Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
     Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893
       Superorder Neognathae Pycraft, 1900 see Cohort Neognathae Pycraft, 1900
         Order Charadriiformes Huxley, 1867 - shorebirds, gulls, auks
           Suborder Charadrii Huxley, 1867 - shorebirds see Order Charadriiformes Huxley, 1867
             Family Haematopodidae Gray, 1840 - oystercatchers see Family Haematopidae Bonaparte, 1838
               Genus Haematopus Linnaeus, 1758
                 Haematopus ater Vieillot, 1825 - blackish oystercatcher
                 Haematopus bachmani Audubon, 1838 - black oystercatcher
                 Haematopus chathamensis Hartert, 1927 see Haematopus unicolor chathamensis Hartert, 1827
                 Haematopus fuliginosus Gould, 1845 - sooty oystercatcher
                 Haematopus leucopodus Garnot, 1826 - Magellanic oystercatcher
                 Haematopus longirostris Vieillot, 1817 - pied oystercatcher
                 †Haematopus meadewaldoi Bannerman, 1913 - Canary Islands oystercatcher
                 Haematopus moquini Bonaparte, 1856 - African oystercatcher
                 Haematopus ostralegus Linnaeus, 1758 - Eurasian oystercatcher
                 Haematopus palliatus Temminck, 1820 - American oystercatcher
                 Haematopus unicolor Forster, 1844 - variable oystercatcher