Phylum [Vertebrata] Lamarck, 1801 see Infraphylum Vertebrata Lamarck, 1801 Class Agnatha Cope, 1889 Subclass †Cephalaspidomorphi Kiaer & Stensiö, 1920 see Class Agnatha Cope, 1889 Order †Anaspida Traquair - anaspids see Class Anaspida Traquair Genus †Jamoytius White, 1946