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 | Hauterivian | Barremian | Alaska | Timmcke,T.A. Palynolgoy of the Lower Cretaceous Pebble Shale Unit, Point Barrow, Alaska. | 1981 |
details | Late Tithonian | England(Sussex) | Norris,G. Palynology of the Jurassic-Cretaceous boundary in Southern England. | 1970 | |
original | Early Cretaceous | Canada(W.Canada) | Pocock,S.A.J. Microfloral analysis and age determination of strata at the Jurassic-Cretaceous boundary in the Western Canada Plains | 1962 |