Pemma rotundum
- Citations total:
- 2
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| original | Middle Eocene | Late Eocene | W.Germany(Schleswig) | Klumpp,B. Contribution to the knowledge of microfossils of the Middle and Upper Eocene | 1953 |
| details | Eocene | Middle Miocene | W.Germany | Maier,D. Investigation of plankton in Tertiary and Quaternary marine sediments. | 1959 |