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Geolocation
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Author - title
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Year
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| details | Late Oligocene | W.Germany(Hesse) | Brosius,M. Plankton of the Kassel, North Hessen, marine Sand (Upper Oligocene). | 1963 | |
| original | Late Eocene | Poland | Eisenack,A. et al. New names for some Hystrichosphaeren of the Bernstein Formation of East Prussia. | 1960 | |
| original | Late Eocene | USSR(European) | Eisenack,A. et al. New names for some Hystrichosphaeren of the Bernstein Formation of East Prussia. | 1960 |