Costatheca elongata
- Citations total:
- 3
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| original | Campanian | Maastrichtian | Canada(Alberta) | Gunther,P.R. et al. Megaspores and other palynomorphs of the Brazeau Formation (Upper Cretaceous) Nordegg area, Alberta, Canada. | 1972 |
| details | Late Cretaceous | Canada(Arctic) | Sweet,A.R. Jurassic and Cretaceous megaspores. | 1979 | |
| details | Late Cenomanian | Spain | Floquet,M. et al. Detailed stratigraphy, paleogeography and first description of megaspores in the Upper Cenomanian of northern Spain. | 1979 |