In the 10th edition of " Systema Naturae ", Linnaeus included several species of fishes ( that do not belong the superclass Osteichthyes ) into the amphibian class.
22.
The other vertebrate superclass is Gnathostomata ( jawed mouths ) and includes the classes Chondrichthyes ( sharks ), Osteichthyes ( bony fishes ), Amphibia, Reptilia, Aves, and Mammalia.
23.
However, another subclass of Osteichthyes, the Sarcopterygii, including lobe-finned fishes including coelacanths and lungfish ) and tetrapods, was the most diverse group of bony fishes in the Devonian.
24.
Lobe-finned fishes ( sarcopterygians ) and their relatives the ray-finned fishes ( actinopterygians ) comprise the superclass of bony fishes ( Osteichthyes ) characterized by their bony skeleton rather than cartilage.
25.
A subclass of the Osteichthyes, the ray-finned fishes ( Actinopterygii ), have become the dominant group of fishes in the post-Paleozoic and modern world, with some 30, 000 living species.
26.
In ichthyology, the difference is that Euteleostomi presents a cladistic view which includes the terrestrial tetrapods that evolved from lobe-finned fish, whereas on a traditional view, Osteichthyes includes only fishes and is therefore paraphyletic.
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