Spore type 28 Zern.,1931
- Citations total:
- 2
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| original | Carboniferous | Poland | Zerndt,J. Megaspores as guide fossils of the productive Coal Measures. | 1931 | |
| original | Nd | Nd | Schopf,J.M. et al. An annotated synopsis of Paleozoic fossil spores and the definition of generic groups. | 1944 |