Sarcopterygii

The Sarcopterygii /ˌsɑrkɒptəˈrɪdʒi.aɪ/ or lobe-finned fish (from Greek σαρξ sarx, flesh, and πτερυξ pteryx, fin) – sometimes considered synonymous with Crossopterygii ("fringe-finned fish", from Greek κροσσός krossos, fringe) – constitute a clade (traditionally a class or subclass) of the bony fish, though a strict cladistic view would include the terrestrial vertebrates. The living sarcopterygians are the coelacanths, lungfish, and the tetrapods.