Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893 Order Pelecaniformes Sharpe, 1891 1 Suborder Phaethontes Sharpe, 1891 2 Suborder Pelecani Sharpe, 1891 see Infraorder Pelecanides Sharpe, 1891