Bion perivelatum
- Citations total:
- 3
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| original | Pridolian | USSR(Baltic) | Eisenack,A. New microfossils of the Baltic Silurian. IV. | 1938 | |
| details | Late Ludlovian | E.Germany(Rostock) | Eisenack,A. Chitinozoans, Hystrichospheres and other microfossils from the Beyrichia-Limestone. | 1955 | |
| details | Pridolian | USSR(Baltic) | Eisenack,A. Chitinozoans, Hystrichospheres and other microfossils from the Beyrichia-Limestone. | 1955 |