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.
Ihishkan win Pteridophytic ilanen xylem wan tiditt d phloem itiruwan s spores itifuqen s karad gametophyte tan daɣ azzaman wan Silurian tolas ijjatan s ihandagan ajjotnen daɣ Silurian wan darat d Devonian wan tizarat