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Author - title
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Year
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| details | Late Paleozoic | Kemp,E.M. The palynology of Late Palaeozoic Glacial deposits of Gondwanaland. | 1975 | ||
| details | Artinskian | Kungurian | Kalkreuth,W.D. et al. A comparative study of the geology, petrology and palynology of Permian coals in Tanzania and southern Brazil. | 1999 | |
| details | Asselian | Kungurian | Jasper,A. et al. The Botrychiopsis genus and its biostratigraphic implications in Southern ParanŠ Basin. | 2003 |