Order Charadriiformes Huxley, 1867 - shorebirds, gulls, auks Suborder Alcae Sharpe - auks see Superfamily Laroidea Vigors, 1825 Family Alcidae Vigors, 1825 - auks Subfamily †Nautilornithinae Wetmore 1 Genus †Nautilornis Wetmore, 1926 2 Genus †Hydrotherikornis A.H. Miller