At: Geol. Sussex, Brighton, W. J. Smith, New Edition By: Dixon F.
journalAt: Johns Hopkins University Studies in Geology, 1 By: Singewald J. T., Berry E. W.
journalAt: Professional Papers / United States Geological Survey, 35 By: Smith G. O., White D.
bookAt: Geol. SE England, London, Longman, Rees, Orme, Brown, Green, & Longman By: Mantell G. A.
journalAt: Science, 5, 124 By: Ward L. F.
journalAt: Bulletin of Geosciences, 88, 3 By: Bauer K., Kustatscher E., Krings M.
journalAt: Botanical Journal of the Linnean Society, 68, 4 By: Matten L. C.
journalAt: Publications of the Carnegie Institution of Washington, 439 By: Chaney R. W., Sanborn E. I.
bookAt: Hepat. Anthocer. N. Amer., New York-London, Columbia University Press, 1 By: Schuster R. M.
journalAt: Botanical Gazette, 130, 1 By: Schlanker C. M., Leisman G. A.