(Late Pliocene of California, US: Boessenecker and Smith; 2011) Some other Paleogene (and in one case possibly Late Cretaceous) birds, typically taxa known only from the most fragmentary remains, might also be pelagornithids.
(Plioceno de California, EUA: Boessenecker and Smith; 2011) Poden ser tamén pelagornítidos algunhas outras aves do Paleoxeno (e nun caso posiblemente do Cretáceo Superior), xeralmente taxons coñecidos só a partir de restos fragmentarios.