| link
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From
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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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| details | Late Llandeilian | Early Caradocian | S.Ireland(Clare) | Emo,G.T. et al. Palynological evidence for the age of the Lower Palaeozoic rocks of Slieve Aughty, Counties Clare and Galway. | 1978 |
| details | Middle Cambrian | Early Ordovician | USSR(Pamirs) | Sivertseva,I.A. et al. Lower Paleozoic microfossil finds in South-Eastern Pamir. (In: Microfossils USSR. T.F.Vozzhennikova et al, editors) | 1974 |