Apsaravis_ukhaana
Ichthyornis_dispar
Gavia_immer
Gallinuloides_wyomingensis
Crax_pauxi
Gallus_gallus
Anatalavis_oxfordi
Chauna_torquata
Anas_platyrhynchos
Emeus_crassus
Apteryx_owenii
Palaeotis_weigelti
Struthio_camelus
Dromaius_novaehollandiae
Rhea_americana
Tinamus_major
Eudromia_elegans
Nothura_maculosa
Crypturellus_undulatus
WSGS_U1b_dash_2001
FMNH_PA_729_wing
FMNH_PA_739
Calciavis_grandei_holotype
Calciavis_grandei_referred
Pseudocrypturus_combined
Siber_and_Siber
Pseudocrypturus_cercanaxius
Paracathartes_howardae
Lithornis_vulturinus_MGUH26770
Lithornis_promiscuus_combined
Lithornis_promiscuus_skull
Lithornis_promiscuus_holotype
Lithornis_plebius
Lithornis_celetius_combined
Lithornis_celetius_others
Lithornis_celetius_postcrania
Lithornis_celetius_holotype
Lithornis