At: Comptes rendus de l'Académie des sciences, Series, 2, Mécanique, Physique, Chimie, Sciences de l'Univers, Sciences de la Terre, 302, 5 By: Galtier J., Scott A. C.
journalAt: Argumenta Palaeobotanica, 1980, 6 By: Remy W., Remy R.
journalAt: American Journal of Botany, 58, 3 By: Gould R. E.
journalAt: American Journal of Botany, 98, 11 By: Grímsson F., Zetter R., Hofmann C.-C.
journalAt: Journal of Plant Research, 108, 1089 By: Takahashi M., Saiki K.
journalAt: Review of Palaeobotany and Palynology, 210 By: Popa M. E., Kvaček J., Vasile Ş., Csiki-Sava Z.
journalAt: Trudy Botanicheskogo Instituta Rossijskoj Akademii Nauk, 13 By: Golovneva L. B.
journalAt: Journal of Paleontology, 31, 3 By: Banks M. R., Johnson J. H.
bookAt: Chronostrat. & Neostratotyp., Bratislava, Vydavatel'stvo Slovenskej akademie vied, 9 By: Ţicleanu N.
journalAt: Australian Systematic Botany, 8, 6 By: Scriven L. J., Hill R. S.