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By: Gardner, John Starkie, - Ettingshausen, Constantin, Freiherr von, - Palaeontographical Society (Great Britain)Edition:Publication info: London, Printed for the Palæontographical society, 1879-86Volume: v.1 (1879-1882)Series:Holding Institution: Smithsonian Libraries and ArchivesSubjects: England Eocene Ferns, Fossil Gymnosperms, Fossil PaleobotanyBHL Collections:
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By: Dawson, J. W., (John William),Edition:Publication info: S.l, s.n, 1870?Volume:Series:Holding Institution: Canadiana.orgSubjects: Ferns, Fossil PaleobotanyBHL Collections:
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By: Pfefferkorn, Hermann W. - Illinois. Dept. of Registration and Education. - Illinois State Geological Survey.Edition:Publication info: Urbana, Illinois State Geological Survey, 1976Volume: Circular no.492Series:Holding Institution: University Library, University of Illinois Urbana ChampaignSubjects: Bomen (biologie) Ferns, Fossil Illinois Paleobotany Pennsylvanian VarensBHL Collections:
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By: Pfefferkorn, Hermann W. - Peppers, Russel A. (Russel Allen), - Phillips, Tom Lee,Edition:Publication info: Urbana, Illinois State Geological Survey, 1971Volume: Circular no.463Series:Holding Institution: University Library, University of Illinois Urbana ChampaignSubjects: Bevruchting Ferns, Fossil Flora (biologie) Grundy County Illinois Paleobotany Pennsylvanian Plants, Fossil Varens Will CountyBHL Collections: