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Geolocation
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Author - title
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Year
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| details | Arenigian | Early Llanvirnian | China(Hupei) | Yin,L. Early Ordovician acritarchs from Hunjiang Region, Jilin and Yichang Region, Hubei, China. | 1995 |
| details | Ashgillian | Poland | Kremer,B. Acritarchs from the Upper Ordovician of southern Holy Cross Mountains, Poland. | 2001 |