(2) Ichthyotomi†; e.g. Pleuracanthus.
(3) Acanthodei†; e.g. Acanthodes.
(4) Plagiostomi.
(a) Selachii; e.g. many extinct and all living Sharks and Dog-Fishes.
(b) Batoidei; e.g. Skates and Rays.
(5) Holocephali; e.g. Chimaera and Callorhynchus.
(ii.) Teleostomi; e.g. such well-known Fishes as the Perch, Cod, Salmon, and Herring, and also the less familiar "Ganoids," living and extinct.
(1) Crossopterygii; e.g. Polypterus.
(2) Chondrostei; e.g. the Sturgeons (Acipenser).
(3) Holostei; e.g. the Bow-fin (Amia), and the Gar Pike (Lepidosteus).