At: Johns Hopkins University Studies in Geology, 11 By: Endô S.
journalAt: Proceedings of the Geological Society of London, 1967, 1640 By: Wagner R. H.
journalAt: Acta Palaeontologica Sinica, 39, Supplement By: Wu X.-W., Wu X.-Y., Wang Y.-D.
journalAt: Proceedings of the Academy of Natural Sciences of Philadelphia, 75 By: Gardner N. L.
journalAt: Fottea, 16, 2 By: Tofilovska S., Cvetkoska A., Jovanovska E., Ognjanova-Rumenova N. G., Levkov Z.
journalAt: American Journal of Botany, 85, 9 By: Crepet W. L., Nixon K. C.
journalAt: Current Science, 79, 10 By: Mehrotra R. C.
journalAt: Neues Jahrbuch für Geologie und Paläontologie Monatshefte, 1995, 12 By: Czier Z.
journalAt: Torreya, 9, 9 By: Cockerell T. D. A.
journalAt: University of Kansas Science Bulletin, 38, 2, Art. 20 By: Leonard A. B.