article: Sarcopterygii
links: Permian-Triassic extinction event Dipnoi Palaeozoic Panderichthys Acanthostega Rhipidistia Tetrapod Acanthodii Tetrapodomorph Tiktaalik Tetrapodomorpha Actinopterygii Coelacanth Carboniferous Pelagic zone Devonian Eusthenopteron Silurian Ichthyostega Osteichthyes Coelacanthimorpha Latimeria Triassic