Calamospora type A Hoff.et al,1955
- Citations total:
- 3
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| original | Visean | Canada(Nova Scotia) | Barss,M.S. Carboniferous and Permian spores of Canada. | 1967 | |
| original | Chesterian | Illinois | Hoffmeister,W.S. et al. Mississippian plant spores from the Hardinsburg Formation of Illinois and Kentucky. | 1955 | |
| original | Chesterian | Kentucky | Hoffmeister,W.S. et al. Mississippian plant spores from the Hardinsburg Formation of Illinois and Kentucky. | 1955 |