Dipnoi
caption: Tampak samping paru-paru Protopterus dolloi
caption: Ilustrasi Ceratodus oleh Heinrich Harder
caption: Neoceratodus forsteri
caption: Lepidosiren paradoxa
caption: Protopterus aethiopicus
caption: Protopterus amphibius
caption: Protopterus annectens
caption: Protopterus dolloi