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Author - title
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| details | Early Arenigian | Argentina(Jujuy) | Vergel,M.D.M. et al. Ordovician palynomorphs of Argentina: An integrated approach. (Aspects of the Ordovician System in Argentina.) | 2002 | |
| details | Early Tremadocian | Iran | Ghavidel-Syooki,M. Palynostratigraphy and Paleogeoraphy of Lower Paleozoic Strata at Kuh-e-Boghou, Southwest of Kashmar City, at Eastern Central Iran | 2003 |