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Geolocation
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Author - title
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Year
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| details | Middle Ordovician | USSR(Dzhambulskaya) | Zhemchuzhnikov,V.G. et al. The position of the Dzhanytas series in the Lesser Karatau section in connection with the discovery of chitinozoans | 1989 | |
| details | Late Ordovician | Libya | Grignani,D. et al. Palaeozoic and Mesozoic subsurface palynostratigraphy in the Al Kufrah Basin, Libya. (In: The Geology of Libya. M.J.Salem et al, editors) | 1991 |