Silurian to recent | image = Lycopodium_plant.jpg | image_caption = Lycopodiella cernua | image_width = 250px | regnum = Plantae | divisio = Lycopodiophyta | subdivision_ranks = Classes | subdivision = Lycopodiopsida - clubmosses Selaginellopsida - spikemosses Isoetopsida - quillworts and scale trees † Zosterophyllopsida - zosterophylls }} The Division Lycopodiophyta (sometimes called Lycophyta) is a tracheophyte subdivision of the Kingdom Plantae. It is the oldest extant (living) vas… (More on Lycopodiophyta)