Hystrichosphaeridium spinellosum
- Citations total:
- 2
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| details | Ordovician | USSR | Timofeev,B.V. Hystrichosphaeridae of the Cambrian | 1956 | |
| details | Nd | Nd | Downie,C. et al. Bibliography and index of fossil dinoflagellates and acritarchs. | 1965 |