Pulvinosphaeridium improcerum
- Citations total:
- 3
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| details | Early Paleozoic | Nd | Cramer,F.H. et al. Lower Paleozoic acritarchs. | 1979 | |
| details | Llandeilian | Indiana | Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. | 1990 | |
| details | Silurian | Oklahoma | Sarjeant,W.A.S. et al. The Micrhystridium and Veryhachium Complexes (Acritarcha: Acanthomorphitae and Polygonomorphitae): A taxonomic reconsideration. | 1994 |