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] Passeriformes Linnaeus, 1758 suboscines see Suborder Suboscines Tyranni see Suborder Tyranni Family Thamnophilidae Swainson, 1824 - antbirds Genus Biatas Cabanis, in Cabanis & Heine, 1859-1860[1860] [monotypic] Biatas nigropectus (Lafresnaye, 1850) - white-bearded antshrike