At: Neues Jahrbuch für Geologie und Paläontologie Abhandlungen, 183, 1-3 By: Fanning U., Edwards D., Richardson J. B.
journalAt: Botanical Journal of the Linnean Society, 1989, 100, 2 By: Shute C. H., Edwards D.
journalAt: American Journal of Botany, 40, 4 By: Beck C. B.
journalAt: Torreya, 1925, 25, 6 By: Berry E. W.
journalAt: American Journal of Botany, 79, 9 By: Saiki K.
journalAt: Taxon, 19, 2 By: Hall J. W.
journalAt: Palaeobotanist, 1991, 41 By: Mei M.-T., Dilcher D. L., Wan Z.-H.
journalAt: Current Science, 57, 18 By: Chandra S., Singh K. J.
journalAt: Annals of the Missouri Botanical Garden, 23, 3 By: Andrews H. N.
journalAt: Acta Palaeontologica Sinica, 40, 4 By: Wang Y., Berry C. M.