Entikan vaskular pteridophytic sareng xilem miwah floem sujati sané kareproduksi olih spora berkecambah dados gametofit idup prasida bebas marevolusi selami periode Silur raris kadiversifikasi ring makudang garis keturunan selami Silur panguntat miwah Devon pangawit.
Pteridophytic vascular plants with true xylem and phloem that reproduced by spores germinating into free-living gametophytes evolved during the Silurian period and diversified into several lineages during the late Silurian and early Devonian.