Bullaspora
- Citations total:
- 3
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| original | Westphalian D | France(Alsace) | Venkatachala,B.S. On some new spore genera from the Upper Carboniferous Coals of Lothringen-Saar-Pfalz Basin. | 1963 | |
| original | Westphalian D | W.Germany(Saarland) | Venkatachala,B.S. On some new spore genera from the Upper Carboniferous Coals of Lothringen-Saar-Pfalz Basin. | 1963 | |
| details | Nd | Nd | Potonie,R. Synopsis of the genera of the sporae dispersae. Part 5. Supplement to all Groups (Turmae). | 1970 |