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Geolocation
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Author - title
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Year
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| details | Neocomian | USSR(Siberia) | Chlonova,A.F. Palynological characteristics of Cretaceous Layers in Siberia and the Far East. | 1971 | |
| details | Recent | Nd | Kremp,G.O.W. Tetrad Markings of Pteridophytic spores and their evolutionary significance. | 1967 | |
| details | Recent | Nd | Knox,E.M. The spores of Pteridophyta, with observations on microspores in Coals of Carboniferous age. | 1939 | |
| details | Valanginian | USSR(WSL) | Markova,L.G. et al. Spores and pollen of the Lower Cretaceous layers of the Turukhansk borehole. | 1960 |