Neornithes Gadow, 1893 - living birds
   Neognathae Pycraft 1900 see Cohort Neognathae Pycraft, 1900
     Neoaves Sibley et al. 1988 see Subcohort Neoaves Sibley et al., 1988
       [Order] Charadriiformes Huxley, 1867 - shorebirds, gulls, auks
         Family Chionidae Lesson, 1828 - sheathbills and allies see Family Chionididae Lesson, 1828
           1 Subfamily Chioninae Lesson, 1828 [monotypic] see Family Chionididae Lesson, 1828
           2 Subfamily Pluvianellinae [monotypic] see Family Chionididae Lesson, 1828