| link
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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 Portlandian | 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 | |
| details | Valanginian | Aptian | USSR(Ukrainian SSR) | Voronova,M.A. Early Cretaceous miospores of the Ukraine | 1984 |