vertebrates Lamarck, 1801 - vertebrates see Infraphylum Vertebrata Lamarck, 1801
   Class †Cephalaspidomorphi Kiaer & Stensiö, 1920 see Class Osteostraci Lankester, 1868
     Subclass †Osteostraci Lankester, 1868 see Class Osteostraci Lankester, 1868
       Order †Benneviaspidiformes Afanassieva, 1991
         Suborder †Scolenaspidoidei Afanassieva, 1991
           Family †Zenaspididae Stensiö, 1958
             1 Genus †Zenaspisᵀ Lankester, 1870
             2 Genus †Diademaspis Janvier, 1985
             3 ?Genus †Tegaspis Wängsjö, 1952