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Geolocation
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Author - title
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Year
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| details | Early Pliocene | Middle Pliocene | Alaska | Ager,T.A. et al. Pliocene terrace gravels of the ancestral Yukon River near Circle Alaska; Palynology, paleobotany, paleoenvironmental reconstruction and region correlation. (In: Tertiary Quaternary Boundaries. T.A. Ager et al, editors) | 1994 |
| details | Late Oligocene | Early Miocene | USSR(Magadan Oblast) | Agapitov,D.I. et al. Paleogene and Neogene deposits of Anadyr Basin. (In: Beringia in the Cenozoic Era. V.L.Kontrimavichus, editor) | 1985 |