Reconstruction of the sporophyte of Aglaophyton major , with a cross section of its sporangium and spores（Image source：Falconaumanni， CC BY-SA 3.0 ） Age Devonian（Pragian） 410 Ma Taxonomy Kingdom: Plantae Genus: Aglaophyton Species: Aglaophyton major Morphological description Aglaophyton major possessed a sporophyte axis with a circular cross-section, smooth and lacking surface ornamentation, reaching up to approximately 6 mm in diameter. The axes exhibited dichotomous bran