Noeggerathiales Nemejc J. Wang et al.

Wang, Jun, Hilton, Jason, Pfefferkorn, Hermann W., Wang, Shijun, Zhang, Yi, Bek, Jiri, Pšenička, Josef, Seyfullah, Leyla J. & Dilcher, David, 2021, Ancient noeggerathialean reveals the seed plant sister group diversified alongside the primary seed plant radiation, Proceedings of the National Academy of Sciences 118 (11), pp. 1-7 : 2

Order— Noeggerathiales Nemejc J. Wang et al. emend. nov.

Emended Order diagnosis—Heterosporous plants with compact, bisporangiate pseudostrobilus. Sporophylls laterally basally fused to form a semidisc or disk. Sporangia sessile, attached to sporophyll surface. Leaf once-pinnate, compound, with multiveined pinnule. Pseudostrobilus and leaf rachis with bilateral, Ω- shaped vascular bundle and secondary xylem.