Leiosphaeridia exasperata
- Citations total:
- 2
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| original | Llandoverian | Pennsylvania | Johnson,N.G. Early Silurian palynomorphs from the Tuscarora Formation in Central Pennsylvania and their paleobotanical and geological significance | 1985 | |
| details | Llandoverian | Nd | Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. | 1990 |