At: Review of Palaeobotany and Palynology, 233 By: Sundue M. A., Poinar G. O.
journalAt: Botanical Journal of the Linnean Society, 85, 2 By: Crane P. R., Manchester S. R.
journalAt: Science progress, 5, 30 By: Seward A. C.
journalAt: International Journal of Plant Sciences, 180, 7 By: Gee C. T., Taylor D. W.
journalAt: Zeitschrift der Deutschen Geologischen Gesellschaft, 4, 3 By: von Schauroth K.
journalAt: Journal of the Indian Botanical Society, 50, 2 By: Chitaley S. D., Sheikh M. T.
journalAt: The Botanique, 5, 2 By: Patil G. V., Singh R. B.
journalAt: Bulletin of the Faculty of Liberal Arts Ibaraki University, Series, Natural science, 6 By: Ôyama T.
journalAt: Journal of Paleontology, 34, 6 By: Johnson J. H., Konishi K.
bookAt: Intr. Paleobot., New York, McGraw-Hill Book Company By: Arnold C. A.