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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 | Valanginian | Hauterivian | Canada(NWT,Franklin) | McGregor,D.C. Triassic, Jurassic and Lower Cretaceous spores and pollen of Arctic Canada. | 1965 |
| original | Middle Albian | Canada(Alberta) | Singh,C. Microflora of the Lower Cretaceous Mannville Group, east-central Alberta. | 1964 |