(Pteraspidomorphi) - class -extinct-
The (Heterostraci) - subclass -extinct-
(Cardipeltiformes) - order -extinct-

(Cardipeltidae)
- family -extinct-
(Cyathaspidiformes) - order -extinct-

(Amphiaspididae)
- family -extinct-

(Gabreyaspididae)
- family -extinct-

(Olbiaspididae)
- family -extinct-

(Aphataspididae)
- family -extinct-

(Eglonaspididae)
- family -extinct-

(Hibernaspididae)
- family -extinct-

(Siberiaspididae)
- family -extinct-

(Tuxeraspididae)
- family -extinct-

(Ariaspidae)
- family -extinct-

(Ctenaspididae)
- family -extinct-

(Cyathaspidae)
- family -extinct-
(Pteraspidiformes) - order -extinct-

(Anchiteraspididae)
- family -extinct-

(Protopteraspididae)
- family -extinct-

(Pteraspididae)
- family -extinct-

(Guerichosteidae)
- family -extinct-

(Obrucheviidae)
- family -extinct-

(Psammolepididae)
- family -extinct-

(Psammosteidae)
- family -extinct-

(Pycnosteidae)
- family -extinct-

(Weigeltaspididae)
- family -extinct-

(Gigantaspididae)
- family -extinct-

(Protaspididae)
- family -extinct-
(Tolypelepidida) - order -extinct-

(Tolypelepididae)
- family -extinct-
(Traquairaspidiformes) - order -extinct-

(Traquairaspididae)
- family -extinct-