At: Science and Culture, 25, 5 By: Ghosh S. S., Ghosh A. K.
journalAt: Palaeobotanist, 1977, 26, 3 By: Trivedi B. S., Ahuja M.
journalAt: Current Science, 34, 8 By: Prakash U.
journalAt: Palaeontographica, Abtheilung, B, Paläophytologie, 153, 1-3 By: Krassilov V. A.
journalAt: Leidse Geologische Mededeelingen, 5, 1 By: Tan S. H.
journalAt: Ministerio de Minería, Combustibles y Metalurgia Publicación Especial, 6 By: Furrazola-Bermúdez G., Kreisel K.
journalAt: Papers and Proceedings of the Royal Society of Tasmania, 1884 By: Johnston R. M.
journalAt: Hattoria, 11 By: Katagiri T., Shinden H.
journalAt: Current Science, 47, 7 By: Nautiyal A. C.
journalAt: Journal of the Palaeontological Society of India, 12 By: Srivastava J. P., Kapoor H. M.