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journalAt: Sciences de la Terre, Series, Mémoire, 28 By: Boureau É.
bookAt: Paleontol. Rossii, Sanct-Petersburg, tipografija Ya. Ionsona [E. Pratz or R. Golike], Nov. Period By: von Eichwald K.
journalAt: International Journal of Plant Sciences, 176, 9 By: Ickert-Bond S. M., Pigg K. B., DeVore M. L.
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bookAt: Traité Paléont., Paris, Munich et Leipzic, Octave Doin [Paris]; R. Oldenbourg [Munich et Leipzic], 2 By: Schimper W. P., von Schenk A. J.
journalAt: Proceedings of the National Academy of Sciences of the United States of America, 72, 7 By: Knoll A. H., Barghoorn E. S., Golubić S.
journalAt: Doklady Akademii Nauk SSSR, 310, 6 By: Golovenoc V. K., Belova M. Yu.
journalAt: Canadian Journal of Botany, 54, 20 By: Basinger J. F.
bookAt: Paleotsen. Fl. Romankul., Leningrad, Izdatel'stvo By: Baikovskaja T. N.