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Author - title
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Year
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| details | Hauterivian | Aptian | Canada(Alberta) | Burden,E.T. Terrestrial palynomorph biostratigraphy of the Lower Part of the Mannville Group, (Lower Cretaceous) Alberta and Montana. (In: The Mesozoic of Middle North America. D.F.Stott and D.J.Glass, editors) | 1984 |
| details | Neocomian | Aptian | Canada(W.Canada) | Miao,S. et al. Spores and pollen. Mesozoic spores and pollen. (In: Paleontological Atlas of North China.III.Micropaleontological Volume.) | 1984 |