vertebrates Lamarck, 1801 - vertebrates see Infraphylum Vertebrata Lamarck, 1801 †Pteraspidimorphi [paraphyletic] †Heterostraci Lankester, 1868, sedis mutabilis - heterostracans Family †Ctenaspididae Kiaer, 1930, nom. praeval. Genus †Zaphoctenaspis Elliott & Blieck, 2010