 The Late Eocene "Protopelicanus" may be a pelecaniform or suliform – or a similar aquatic bird such as a pseudotooth (Pelagornithidae).The supposed Miocene pelican "Liptornis" from Patagonia is a "nomen dubium" (of doubtful validity), being based on fragments providing insufficient evidence to support a valid description.Fossil finds from North America have been meagre compared with Europe, which has a richer fossil record.