Abstract
Fossil pollen of the Umbelliferae occur frequently and with considerable diversity in Eocene sediments in France. We have been able to recognise 43 forms belonging to 23 genera. The Thanetian II, the Sparnacian, the Marinesian and the Ludian are characterised by particular assemblages. While in the Thanetian II pollen of a very archaic character predominate, the Ludian shows the greatest diversification of the family. With respect to climate, the Sparnacian warming is confirmed by the appearance of Steganotaenia, a taxon characteristic of the tropical savannah. A drier climatic phase developed in the Marinesian, indicated by the development of Hohenackeria, a mediterranean taxon of xerophilous affinities. The appearance and extension of modern temperate taxa in the Ludian confirm the climatic change at the end of the Eocene.
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