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Author - title
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| details | Tatarian | USSR(Siberia) | Dryagina,L.L. Biostratigraphic analysis of some groups of organic remains; evolutionary stages and methods of stratigraphic utilization; spores and pollen. (In: The Upper Paleozoic of the Angara Basins;Fauna and Flora. I.T. Zhuravleva and V.I.Ilina, editor) | 1988 | |
| details | Visean | Alportian | China(Kansu) | Zhu,H. A revised palynological Sub-Division of the Namurian of Jingyuan, Northwest China | 1993 |