Introduction. Cyclostomes. Chondrichthyans. Sarcopterygians. Basal Ray-finned fishes. Elopomorphs. Osteologlossomorphs. Otocephalans. Basal Euteleosteans. Basal Neoteleosteans. Paracanthopterygians. Basal Acanthopterygians. Advanced Acanthopterygians. Conclusion.