Vertebrata Cuvier, 1812 - vertebrates Class Agnatha Cope, 1889 [paraphyletic] Subclass Cephalaspidomorpha see Class Agnatha Cope, 1889 Order †Anaspida Traquair - anaspids see Class Anaspida Traquair 1 ?Family †Jaymoytiidae 2 Family †Birkeniidae Traquair, 1899 3 Family †Euphaneropsidae see Family Euphaneropidae Woodward, 1900 4 Family †Endeiolepidae Stensiö, 1939 5 Family †Lasaniidae [monotypic] see Family Birkeniidae Traquair, 1899