[Phylum] Chordata Bateson, 1885 - chordates Subphylum Craniata auct. Infraphylum Vertebrata Lamarck, 1801 - vertebrates Superclass †Osteostracomorphi Class †Osteostraci Lankester, 1868 Order †Thyestiformes Family †Witaaspididae Afanassieva, 1991 Genus †Witaaspis Robertson, 1939