Known fossil ranges. Ghost lineages.
1: "Anthracosauria" 2: Temnospondyli 3: "Microsauria" 4: Seymouriamorpha 5: Diadectidae 6: Nectridea 7: Aistopoda 8: Amniota 9: Baphetidae 10: Colosteidae 11: Gephyrostegidae 12: Casineria 13: Crassigyrinus 14: Whatcheeriidae 15: Adelogyrinidae 16: Ventastega 17: Ichthyostega 18: Acanthostega 19: Tulerpeton