Palynological evidence for an important change in the vegetation of the Omo Basin between 2.5 and 2 million years ago. (In: Earliest man and environments in the Lake Rudolf Basin: Stratigraphy Paleoecology and Evolution. Y.Coppens et al, editors)
Reference:
Bonnefille,R. (1976)
Palynological evidence for an important change in the vegetation of the Omo Basin between 2.5 and 2 million years ago. (In: Earliest man and environments in the Lake Rudolf Basin: Stratigraphy Paleoecology and Evolution. Y.Coppens et al, editors) Earliest man and enviroments in the Lake Rudolf Basin, Stratigraphy, Paleoecology and Evolution. (Y.Coppens et al, editors)
P. 421- 431