Phylum Chordata Bateson, 1885 - chordates Class †Conodonta Eichenberg, 1930 Subclass †Conodonti Branson see Subclass Conodonta Eichenberg, 1930 Order †Prioniodontida Dzik Family †Icriodontidae Müller & Müller Genus †Pelekysgnathus Thomas, 1949 1 †Pelekysgnathus inclinatus Thomas 2 †Pelekysgnathus planus Sannemann 3 †Pelekysgnathus brevis Sandberg & Dreesen