Subphylum [Vertebrata] Cuvier, 1812 - vertebrates see Infraphylum Vertebrata Lamarck, 1801 Class Agnatha Cope, 1889 Subclass †Thelodonti Kiaer, 1932 Order †Phlebolepidiformes Berg, 1937 Family †Phlebolepididae Berg, 1940, nom. praeval. Genus †Helenolepis Karatajūtė-Talimaa, 1978