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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 | Wenlockian | Wales | Aldridge,R.J. et al. Distribution of microfossil Groups across the Wenlock Shelf of the Welsh Basin. | 1981 | |
| details | Ludlovian | Early Downtonian | Libya | Al-Ameri,T.K. Acid resistant microfossils used in the determination of Paleozoic palaeoenvironments in Libya. | 1983 |