article: Labyrinthodont
links: Synapsid Synapsida Panderichthys Acanthostega Sauropsid Sauropsida Temnospondyli Tetrapod Lepospondyli Temnospondyl Tiktaalik Lissamphibia Pelagic zone Devonian Eusthenopteron Sarcopterygii Ichthyostega Amniote Triassic