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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 | Maastrichtian | North Dakota | Bergad,R.D. Palynology of the Hell Creek Formation (Maastrichtian) in South-Central North Dakota. | 1974 | |
| details | Paleocene | USA | Balme,B.E. Fossil in situ, spores and pollen grains: An annotated catalogue. | 1995 | |
| details | Cretaceous | Nd | Ramanujam,C.G.K. et al. Remain of Azollaceae from Late Albian of Cauvery Basin and their evolutionary significance. | 1996 |