At: Science Reports of the Tohoku University, Series, 2, Geology, 43, 2 By: Kon'no E.
journalAt: Paleontological Journal, 29, 1 A By: Naugolnykh S. V.
journalAt: Review of Palaeobotany and Palynology, 123, 3-4 By: Barone-Nugent E. D., McLoughlin S., Drinnan A. N.
journalAt: Nature, 204, 4958 By: Lukose N. G.
journalAt: Revue de Micropaléontologie, 1968, 11, 3 By: Binda P. L.
journalAt: Phytomorphology, 59, 1-2 By: Prasad M., Agarwal A., Mandaokar B. D.
journalAt: Chishitsugaku zasshi, 49, 587 By: Ôishi S., Huzioka K.
journalAt: Torreya, 20, 5 By: Berry E. W.
journalAt: Review of Palaeobotany and Palynology, 200 By: Libertín M., Bek J., Drábková J.
journalAt: Acta botanica Academiae Scientiarum Hungaricae, 14, 3–4 By: Nagy E.