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Author - title
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| details | Westphalian B | England | Scott,A.C. et al. Paleozoic spores and pollen. Chapter 18G Palaeozoic megaspores. (Principles and Applications. Applications. J.Jansonius and D.C.McGregor, editors.) | 1996 | |
| details | Middle Pennsylvanian | Illinois | Kedves,M. Tranmission Electron Microscopy of the Fossil Spores. | 1996 |