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To
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Geolocation
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Author - title
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Year
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| original | Late Ashgillian | Czechoslovakia | VavrdovЎ,M. Recycled acritarchs in the Uppermost Ordovician of Bohemia | 1982 | |
| details | Emsian | Uruguay | Pжthe de Baldis,E.D. Additional Paleomicroplankton from the Lower Devonian of Uruguay. | 1977 | |
| original | Ludlovian | Spain | Cramer,F.H. et al. Taxonomic considerations on the acritarchs of the Middle and Upper Silurian of northern Spain. | 1968 |