At: International Journal of Plant Sciences, 1995, 156, 6 By: Hao S.-G., Gensel P. G.
journalAt: Paleontological Journal, 43, 10 By: Karasev E. V.
journalAt: IAWA Journal, 38, 4 By: Pérez-Lara D. K., Castañeda-Posadas C., Estrada-Ruiz E.
journalAt: Botanical Gazette, 148, 2 By: Manchester S. R., Crane P. R.
journalAt: Geološki vjesnik, 1967, 21 By: Sokač B.
journalAt: Proceedings and transactions of the Royal Society of Canada, Series 3, 16, Section 4 By: Bell W. A.
journalAt: American Journal of Science, Series 3, 30, 179 By: Seely H. M.
journalAt: Review of Palaeobotany and Palynology, 59, 1-4 By: Lebedev E. L., Herman A. B.
journalAt: Bulletin / Victoria Memorial Museum, Geological Survey, Canada, 1 By: Wilson W. J.
journalAt: Review of Palaeobotany and Palynology, 171 By: Hao S.-G., Xue J.-Z., Zhu X., Wang D.-M.