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journalAt: Botany, 9 By: Wilf P., Stevenson D., Cúneo N. R.
journalAt: Journal of Paleontology, 40, 2 By: Johnson J. H.
journalAt: Palaeontographica, Abtheilung, B, Paläophytologie, 292, 4-6 By: Halamski A. T., Kvaček J.
journalAt: Stratigraphy and Geological Correlation, 24, 7 By: Herman A. B., Golovneva L. B., Shczepetov S. V., Grabovsky A. A.
journalAt: Courier Forschungsinstitut Senckenberg, 241 By: Schrank E., Rüffle L.
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journalAt: Geologica Hungarica, Series, Palaeontologica, 59 By: Hably L.