References
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Frumin, S. I. & Friis, E. M. (1999): Magnoliid reproductive organs from the Cenomanian-Turonian of north-western Kazakhstan: Magnoliaceae and Illiciaceae. – Plant Systematics and Evolution 216(3–4): 265–288.
Hoffman, G. L. & Stockey, R. A. (1997): Morphology and paleoecology of Ricciopsis speirsae sp.nov. (Ricciaceae), a fossil liverwort from the Paleocene Joffre Bridge locality, Alberta, Canada. – Canadian Journal of Botany 75(8): 1375–1381.
Reymanówna, M. (1985): Mirovia szaferi gen. et sp. nov. (Ginkgoales) from the Jurassic of the Kraków Region, Poland. – Acta Palaeobotanica 25(1–2): 3–12.
Takahashi, K. & Shimono, H. (1982): Maestrichtian Micro flora of the Miyadani-gawa Formation in the Hida District, Central Japan. – Bulletin of the Faculty of Liberal Arts, Nagasaki University, Natural Science 22(2): 11–188.
Dunker, W. B. R. H. (1846): Monographie der norddeutschen Wealdenbildung. Ein Beitrag zur Geognosie und Naturgeschichte der Vorwelt. Verlag von Oehme un Müller, Braunschweig: 22 pp.