(Aneurophyton,(Archaeopteris,(Early_Carb_lygonopterids,(Higher_lygonopterids,(Medullosa,(Cycadales,(Corystospermaceae,((Callistophyton,(Euramerican_cordaites,(Ginkgoales,Coniferales))),(Peltaspermum,(Glossopteridales,(Caytonia,(angiosperms,(Pento_ylon,(Bennettitales,(Ephedra,(Welwitschia,Gnetum))))))))))))))));