At: Torreya, 8, 9 By: Berry E. W.
journalAt: American Journal of Science, Series 4, 29, 171 By: Berry E. W.
journalAt: American Journal of Botany, 42, 6 By: Arnold C. A., Lowther J. S.
journalAt: Geological Magazine, Decade 6, 1, 10 By: Stopes M. C.
journalAt: American Geologist, 12, 4 By: Macbride T. H.
journalAt: Report of the British Association for the Advancement of Science, 1896, 66 By: Seward A. C.
journalAt: Transactions of the Royal Society of Canada, Series, Section 4, Geological Sciences including Mineralogy, Series 3, 20, Section 4 By: Warren P. S.
journalAt: Bulletin of the Department of Geological Sciences / University of California, 18, 12 By: Wieland G. R.
journalAt: Botanical Journal of the Linnean Society, 170, 3 By: Martínez L. C. A., Artabe A. E., Bodnar J.
journalAt: Review of Palaeobotany and Palynology, 256 By: Martínez L. C. A., Ottone E. G., Artabe A. E.