link
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From
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Geolocation
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Author - title
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Year
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details | Llanvirnian | Ashgillian | Saudi Arabia | McClure,H.A. Chitinozoan and acritarch assemblages stratigraphy and biogeography of the Early Palaeozoic of Northw West Arabia | 1988 |
details | Late Caradocian | Saudi Arabia | Jachowicz,M. Ordovician acritarch assemblages form Central and Northwestern Saudi Arabia. (In: Palaeozoic Palynostratigraphy of the Kingdom of Saudi Arabia. B.Owens et al, editors) | 1995 |