Orbisporis
- Citations total:
- 2
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| original | Tournaisian | Namurian | Spitsbergen | Bharadwaj,D.C. et al. Spore assemblage out of a Lower Carboniferous shale from Spitzbergen. | 1961 |
| details | Nd | Nd | Potonie,R. Synopsis of the genera of the sporae dispersae. Part 4. Supplement to all Groups, (Turmae). | 1966 |