Spore type 1 Zern.,1931
- Citations total:
- 4
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| original | Carboniferous | W.Germany(N.Rhine) | Zerndt,J. The Suitableness of megaspores as guide fossils. | 1938 | |
| original | Westphalian | W.Germany | Zerndt,J. The Suitableness of megaspores as guide fossils. | 1938 | |
| original | Westphalian A | Westphalian B | Netherlands | Dijkstra,S.J. et al. A monographic revision of Carboniferous megaspores with special consideration to South Limburg, (Netherlands). | 1946 |
| original | Desmoinesian | Illinois | Schopf,J.M. Spores characteristic of Illinois Coal No. 6. | 1935 |