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journalAt: Journal of the Botanical Research Institute of Texas, 10, 1 By: Chambers K. L., Poinar G. O.
journalAt: Proceedings of the United States National Museum, 1882, 5 By: Newberry J. S.
journalAt: Proceedings of the United States National Museum, 5 By: Newberry J. S.
journalAt: Strelitzia, 20 By: Anderson J. M., Anderson H. M., Cleal C. J.
journalAt: Zeitschrift der Deutschen Geologischen Gesellschaft, 2, 3 By: Stiehler A. W.
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journalAt: Palaeontographica, Abtheilung, B, Paläophytologie, 103, 4-6 By: Couper R. A.
bookAt: Brit. Purbeck Charoph., London, The Trustees of the British Museum (Natural History) By: Harris T. M.
journalAt: Compte rendu sommaire de la Société Géologique de France, 1968, 4 By: Segonzac G.