Pterospermopsis sp.2
- Citations total:
- 3
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| original | Sparnacian | France(Paris Basin) | Gruas-Cavagnetto,C. Palynological study of various Sparnacian Beds in the Paris Basin | 1968 | |
| original | Early Cambrian | Middle Cambrian | USSR(Baltic) | Aren,B. et al. The Baltic Syncline. (In: Stratigraphy of Upper Precambrian and Cambrian deposits on the western part of the East European Platform. B.M.Keller and A.Y.Rozanov, editors) | 1979 |
| original | Late Oxfordian | France(Rhone) | Courtinat,B. et al. Dinoflagellates of the Trept Limestone Beds (Upper Oxfordian). | 1980 |