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journalAt: Journal of the Faculty of Science, Imperial University of Tokyo, Section, 3, Botany, 1, 4 By: Yasui K.
journalAt: Palaeobotanist, 1964, 13, 2 By: Roy S. K.
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bookAt: Studii Geol. Paleont. Lombardia, Milano, presso Carlo Turati tipografo-editore By: Stoppani A.
bookAt: Stud. Paleont., Verona, dalla tip. di G. Antonelli & Giorgio Franz in Monaco By: Massalongo A.
bookAt: Stud. Fl. Foss. Senigall., Imola, Tipografia d'Ignazio Galeati e figlio By: Massalongo A., Scarabelli G.
journalAt: Analele ştiinţifice ale Universităţii “Al. I. Cuza” din Iaşi, Series, Seria nouă. Secţiunea 2.a, biologie, 1969, 15, 2 By: Starostin G., Trelea N.
journalAt: Acta Palaeobotanica, 21, 2 By: Kvaček Z., Walther H.
journalAt: Journal of earth system science, 120, 4 By: Mehrotra R. C., Bera S. K., Basumatary S. K., Srivastava G.