Phylum [Vertebrata] (Lamarck, 1801) Class Osteichthyes Huxley, 1880 - bony fishes see [unranked] Euteleostomi Subclass Sarcopterygii Romer, 1955 see Clade Sarcopterygii Romer, 1955 Superorder Crossopterygii (Huxley, 1861) Order Actinistia Cope, 1872 - coelacanths see [unranked] Coelacanthimorpha