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journalAt: Zeitschrift für Botanik, 5, 9 By: Solms-Laubach H.
journalAt: Chinese science bulletin, 51, 21 By: Wang J.
journalAt: Bulletin of the Geological Society of China, 7 By: Halle T. G.
journalAt: Professional Papers / United States Geological Survey, 523, E By: Mamay S. H.
journalAt: PeerJ, 5, e3434 By: Grímsson F., Grimm G. W., Zetter R.
bookAt: Osnovy Paleontol., Moscow, Izdateľstvo Akademii Nauk SSSR, [14] By: Abramov I. I., Savicz-Lubitskaya L. I.
bookAt: Osnovy Paleontol., Moscow, Izdateľstvo Akademii Nauk SSSR, [14] By: Maslov V. P.
bookAt: Gran. Ordov. Silur. Kazakhst., Alma-Ata, Izdatel'stvo "Nauka" Kazakhskoj SSR By: Gnilovskaja M. B.
bookAt: Valanzhin Mangyshl., Moscow, Izdatel'stvo "Nauka" By: Smirnova S. B.