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 †Scolenaspididae Afanassieva, 1991
             1 Genus †[Scolenaspis]ᵀ Jarvik, 1954
             2 Genus †Stensiopelta Denison, 1951
             3 Genus †Machairaspis Janvier, 1985
             4 Genus †Zychaspis Janvier, 1985
             5 Genus †Ukrainaspis Sansom, 2009 [monotypic]
             6 ?†"Cephalaspis" verruculosa Wängsjö, 1952
             7 ?†"Cephalaspis" aarhusi Wängsjö, 1952
             8 Genus †Victoraspis Carlsson & Blom, 2008 [monotypic]