Phylum Chordata Bateson, 1885 - chordates Class †Conodonta Eichenberg, 1930 Subclass †Conodonti Branson see Subclass Conodonta Eichenberg, 1930 Order †Ozarkodinida Dzik Family †Spathognathodontidae Hass Genus †Bispathodus Müller, 1962 1 †Bispathodus stabilis (Branson & Mehl)