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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 | Cambrian | W.Germany(Bavaria) | Pflug,H.D. et al. Palynostratigraphical and paleobotanical studies in the Pilot Hole of the German Continental deep Drilling Program; Results and implications. | 1991 | |
| details | Late Tremadocian | Estonia | Volkova,N.A. Acritarchs from the Cambrian - Ordovician Boundary Beds, (Boring Core M-56), of the Estonian, near Clint Area. | 1993 |