†family Pelagornithidae Fürbringer 1888 (bird)
Invalid subtaxa: Cyphornithidae Wemore 1928, Dasornithidae Harrison and Walker 1976, Odontopterygidae Lydekker 1891, Pseudodontornis longidentata Harrison and Walker 1976 [nomen dubium], Pseudodontornithidae Lambrecht 1933
Parent taxon: Neognathae according to G. Mayr 2011
Sister taxa: Alciformes, Bucerotiformes, Eurolimnornithiformes, Galloanserae, Gracilitarsidae, Neoaves, Odontoanserae, Perplexicervix, Vastanavis
Subtaxa: Caspiodontornis, Cyphornis, Dasornis, Gigantornis, Lutetodontopteryx, Macrodontopteryx, Pelagornis, Tympanonesiotes
Ecology: ground dwelling carnivore