Outgroup_to_Seed_Plants
Devonian_seed_fern
Medullosaceae
Callistophyton
Cordaitales
Coniferales
Ginkgoales
Corystospermaceae
Peltaspermum
Cycadales
Glossopteridales
Caytoniaceae
angiosperms
Pentoxylon
Bennettitales
Ephedra
Welwitschia
Gnetum