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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 | Early Paleozoic | Nd | Cramer,F.H. et al. Lower Paleozoic acritarchs. | 1979 | |
| details | Late Arenigian | Llanvirnian | Morocco | Cramer,F.H. et al. Late Arenigian (Ordovician) acritarchs from Cis-Saharan Morocco. | 1977 |