(Petalichthyida,((Bollandaspis_woschmidti,(Actinolepis_tuberculata,(Actinolepis_magna,Actinolepis_spinosa))),(Aleosteus_eganensis,Bryantolepis_brachycephala,(Anarthraspis_sp,Eskimaspis_heintzi,Stuertzaspis_germanica,(Aethaspis_major,Aethaspis_utahensis),(Baringaspis_dineleyi,Proaethaspis_ohioensis),(Heightingtonaspis_anglica,Kujdanowiaspis_sp),(Lehmanosteus_hyperboreus,Sigaspis_lepidophora,Simblaspis_cachensis)))));