At: Palaeontographica, Abtheilung, B, Paläophytologie, 109, 1-4 By: Kräusel R.
journalAt: Paläontologische Zeitschrift, 65, 3-4 By: Granzow W.
journalAt: Palaeontographica Americana, 4, 31 By: Grierson J. D.
journalAt: Atlantic Geology, 50 By: Álvarez-Vázquez C., Wagner R. H.
journalAt: Review of Palaeobotany and Palynology, 192 By: Moisan P., Voigt S.
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: 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.