Couperites
- Citations total:
- 2
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| original | Early Cenomanian | Maryland | Pedersen,K.R. et al. Fruits from the Mid-Cretaceous of North America with pollen grains of the Clavatipollenites type. | 1991 | |
| details | Nd | Nd | Friis,E.M. et al. In situ, pollen and spores in plant evolution. Chapter 14B angiosperm pollen in situ, in Cretaceous reproductive organs. (Principles and Applications. Applications. J.Jansonius and D.C.McGregor, editors.) | 1996 |