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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 | Late Permian | Tatarian | USSR(Khakass A.O.) | Dibner,A.F. Upper Paleozoic palynozones of Western Angaraland. | 1976 |
| details | Volgian | Valanginian | USSR(Far East) | Srivastava,S.K. Cretaceous spore-pollen floras | 1978 |
| details | Kimmeridgian | Valanginian | Canada(NWT,Mackenzie) | Fensome,R.A. Miospores from the Jurassic-Cretaceous boundary beds, Aklavik Range, Northwest Territories, Canada. (Incorporating taxonomic reviews of several Groups of Mid-Late Mesozoic miospores) | 1983 |