Robustus group
- Citations total:
- 3
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| details | Early Eocene | Texas | Krutzsch,W. On Thomsonipollis magnificus, (Thomson and Pflug,1953), n.fgen., n.comb., and observations on the regional distribution of some pollen groups in the older Paleogene. | 1960 | |
| details | Maastrichtian | Lutetian | Germany | Kedves,M. On some problems of palynologic stratigraphy applied to the Lower Tertiary in Europe. | 1967 |
| details | Thanetian | Cuisian | France | Kedves,M. On some problems of palynologic stratigraphy applied to the Lower Tertiary in Europe. | 1967 |