Neornithes Gadow, 1893 - living birds Palaeognathae - palaeognaths see Cohort Palaeognathae Pycraft, 1900 Family Tinamidae Gray, 1840 - tinamous Subfamily Rhynchotinae von Boetticher, 1934 Genus Nothura Wagler, 1827 Nothura chacoensis Conover, 1937 - Chaco nothura