EusthenopteronPanderichthysElginerpetonVentastegaMetaxygnathusAcanthostegaIchthyostegaHynerpetonGreerepetonEryopsBalanerpetonSaxonerpetonTulerpetonWhatcheeriaCrassigyrinusWestlothianaProterogyrinusArcheriaOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Ahlberg_1998aa