At: Australian journal of botany, 2, 1 By: Cookson I. C., Pike K. M.
journalAt: Johns Hopkins University Studies in Geology, 13 By: Berry E. W.
journalAt: Review of Palaeobotany and Palynology, 98, 3-4 By: Gerrienne P.
journalAt: Transactions of the Royal Society of Edinburgh, 40, 4 (31) By: Kidston R.
bookAt: Foss. Pl. Coal Meas. U.S., Pottsville, Printed by B. Bannan By: Lesquereux L. C.
journalAt: Annual Report of the United States Geological Survey, 18, 3 By: Knowlton F. H.
journalAt: Review of Palaeobotany and Palynology, 160, 1-2 By: Li Y.-L., Kvaček Z., Ferguson D. K., Li C.-S., Yang J., Ying T.-S., Ablajev A. G., Liu H.-M.
journalAt: Review of Palaeobotany and Palynology, 111, 1-2 By: Poole I., Cantrill D. J., Hayes P. A., Francis J. E.
journalAt: American Journal of Botany, 84, 6 By: Call V. B., Dilcher D. L.
journalAt: American Museum Novitates, 221 By: Berry E. W.