| 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 | Eocene | Late Neogene | California | Eisenack,A. et al. Catalog of fossil dinoflagellates, hystrichospheres and related microfossils. Acritarchs. | 1976 |
| details | Middle Eocene | Early Oligocene | Belarus | Vialov,O.S. et al. Region I. The Western Russian, (East European), Platform, (Lithuania, Byelorussia and Kaliningrad Region of Russia). (In: Late Eocene-Early Oligocene geological and Biotical events on the Territory of the Former Soviet Union.Part 1: The regional geology of the Upper Eocene and Lower Oligocene. V.A.Krasheninnikov and M.A.Akhmetiev, editors) | 1996 |
| details | Miocene | Alaska | Waloweek,W. et al. Geographic range of Tytthodiscus extended to Alaska. | 1957 |