vertebrates Lamarck, 1801 - vertebrates see Infraphylum Vertebrata Lamarck, 1801
   Class †Pteraspidomorphi Goodrich, 1909 see Class Pteraspidomorpha
     Subclass †Heterostraci Lankester, 1868
       Order †Cyathaspidiformes Kiaer, 1930
         Family †Ctenaspididae Kiaer, 1930, nom. praeval.
           Genus †Ctenaspis Kiaer, 1930
             1 †Ctenaspis dentataᵀ Kiaer, 1930
             2 †Ctenaspis cancellata Kiaer, 1930
             3 †Ctenaspis kiaeri Zych, 1931
             4 †Ctenaspis obruchevi Dineley, 1976
             5 †Ctenaspis russelli Dineley, 1976
             6 †Ctenaspis ornata Dineley, 1976