Sarcopterygii Romer, 1955 Rhipidistia Cope, 1887 Tetrapodomorpha Ahlberg, 1991 1 †Rhizodontida Andrews & Westoll, 1970 see [unranked] Rhizodontimorpha 2 Osteolepidida Boulenger 1901 [Cloutier & Ahlberg 1996]