[Phylum] Chordata Bateson, 1885 - chordates
   Subphylum Craniata auct.
     Infraphylum Vertebrata Lamarck, 1801 - vertebrates
       Superclass †Osteostracomorphi
         Class †Osteostraci Lankester, 1868
           Order †Thyestiformes
             Family †Tremataspididae Woodward, 1891, nom. praeval.
               01 Genus †Tremataspis Schmidt, 1866
               02 Genus †Odontotodus Pander, 1856
               03 Genus †Dartmuthia Patten, 1931
               04 Genus †Oeselaspis Robertson, 1935
               05 Genus †Didymaspis Lankester, 1867
               06 Genus †Sclerodus Agassiz, 1839
               07 Genus †Stigmolepis Pander, 1856
               08 Genus †Timanaspis Obruchev, 1962
               09 Genus †Tannuaspis Obruchev, 1956
               10 Genus †Tyriaspis Heintz, 1967
               11 Genus †Aestiaspis Janvier & Lelièvre, 1994