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
           1 Family †Scolenaspididae Afanassieva, 1991
           2 †"Cephalaspis" microlepidota Balabai, 1962, incertae sedis
           3 †"Cephalaspis" djurinensis Balabai, 1962, incertae sedis
           4 Family †Zenaspididae Stensiö, 1958