Pterospermopsis bulbosa
- Citations total:
- 2
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| original | Late Bajocian | Canada(W.Canada) | Pocock,S.A.J. Palynology of the Jurassic sediments of western Canada. Part 2. Marine species. | 1972 | |
| details | Jurassic | Nd | Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. | 1990 |