Calamospora dura
- Citations total:
- 2
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| original | Late Devonian | Canada(Ontario) | McGregor,D.C. Spores and other plant microfossils from selected Devonian sedimentary Formations of Canada | 1957 | |
| original | Early Devonian | Canada(Ontario) | McGregor,D.C. Spores and other plant microfossils from selected Devonian sedimentary Formations of Canada | 1957 |