Baltisphaeridium ungulatum
- Citations total:
- 3
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| details | Early Ordovician | Middle Ordovician | USSR(Russian Platform) | Umnova,N.I. Ordovician and Silurian acritarchs of the Moscow Basin and Prebaltic | 1975 |
| details | Tremadocian | USSR(Russian Platform) | Umnova,N.I. Ordovician and Silurian acritarchs of the Moscow Basin and Prebaltic | 1975 | |
| details | Tremadocian | USSR(Russian Platform) | Umnova,N.I. Ordovician and Silurian acritarchs of the Moscow Basin and Prebaltic | 1975 |