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Geolocation
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Author - title
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Year
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| details | Late Llandoverian | Canada(Quebec) | Achab,A. Acritarchs from the Awantjish Formation (Upper Llandoverian) in the Val Brillant Borehold, Matapedia Valley, Quebec. | 1976 | |
| details | Silurian | Devonian | USSR(Georgian SSR) | Abesadze,M. et al. New data on age of metamorphosed Schists of Dzirulj Massif | 1980 |
| details | USSR(Georgian SSR) | Abesadze,M. et al. New data on age of metamorphosed Schists of Dzirulj Massif | 1980 |