Chasmataspidida
(属)Achanarraspis Achanarraspis reedi(デボン紀) ディプロアスピス属 Diploaspis Diploaspis casteri(デボン紀) Diploaspis muelleri(デボン紀) Diploaspis praecursor(シルル紀) (属)Dvulikiaspis Dvulikiaspis menneri(デボン紀) (属)Forfarella Forfarella mitchelli(デボン紀) (属)Heteroaspis Heteroaspis stoermeri(デボン紀) (属)Hoplitaspis Hoplitaspis hiawathai(オルドビス紀) (属)Loganamaraspis Loganamaraspis dunlopi(シルル紀) (属)Nahlyostaspis Nahlyostaspis bergstroemi(デボン紀) (属)Octoberaspis Octoberaspis ushakovi(デボン紀) (属)Skrytyaspis Skrytyaspis andersoni(デボン紀)
ネジムシ Chasmataspis laurencii
Hoplitaspis hiawathai
Diploaspis casteri
Diploaspis praecursor
Octoberaspis ushakovi
Dvulikiaspis menneri
Forfarella mitchelli