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2. Flora of the Shemshak Formation (Elburz, Iran), part 3: Middle Jurassic (Dogger) plants from Katumbaragah Vasek Gah and Imam Manak;Barnard;Palaeontographica B,1976
3. Mesozoic conifer leaves with ‘Sciadopitys-like’ stomatal distribution. A re-evaluation based on fossils from Spitzbergen, Greenland and Baffin Island;Bose;Nor. Polarinst. Skr.,1990
4. Global biogeography;Briggs,1995
5. Pseudotorellia from the Lower Cretaceous coal-bearing deposits of eastern Transbaikalia;Bugdaeva;Paleontol. Zh.,1995