At: Bulletin of the Geological Society of China, 25 By: Lu Y.-H.
journalAt: Canadian Record of Science, 5, 1 By: Penhallow D. P.
journalAt: Palaeontographica, Abtheilung, B, Paläophytologie, 131, 5-6 By: Rothwell G. W.
journalAt: Geologica Carpathica, 48, 4 By: Sitár V., Kvaček Z.
journalAt: Contributions from the Museum of Paleontology, University of Michigan, 20, 5 By: Becker H. F.
journalAt: Proceedings of the Linnean Society of New South Wales, 60, 3-4 By: Burges N. A.
journalAt: Professional Papers / United States Geological Survey, 186, J By: Brown R. W.
journalAt: Polar Research, 9, 1 By: Bose M. N., Manum S. B.
journalAt: Professional Papers / United States Geological Survey, 154, J By: Brown R. W.
journalAt: Professional Papers / United States Geological Survey, 131, A By: Berry E. W.