At: Revue roumaine de géologie, géophysique et géographie, Series, Géologie, 23, 1 By: Dragastan O. N., Bucur I. I.
journalAt: Palaeontographica, Abtheilung, B, Paläophytologie, 145, 5-6 By: Cramer F. H., Allam B., Kanes W. H., Díez M. C. R.
journalAt: Geological Magazine, 95, 1 By: Neves R.
journalAt: Review of Palaeobotany and Palynology, 39, 1-2 By: Friis E. M.
journalAt: Bulletins of American Paleontology, 49, 222 By: Stanley E. A.
journalAt: Aquatic Botany, 90, 4 By: Estrada-Ruiz E., Calvillo-Canadell L., Cevallos-Ferriz S. R. S.
journalAt: Palaeontologia Polonica, 21 By: Karczewska J., Ziembińska-Tworzydło M.
journalAt: University of Kansas paleontological contributions, Series, Articles, 51 By: Bukry J. D.
journalAt: Studia botanica Hungarica, 30-31 By: Rákosi L., Barbacka M.
journalAt: Professional Papers / United States Geological Survey, 159 By: Hollick A.