FOSSIL POLLEN OF EUPHORBIACEAE FROM THE EOCENE OF FRANCE
FOSSIL POLLEN OF EUPHORBIACEAE FROM THE EOCENE OF FRANCE
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DOI：
10.1080/00173139209429452
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发表时间：
1992-01-01
期刊：
影响因子：
0.9
通讯作者：
KOHLER, E
中科院分区：
文献类型：
--
作者：
GRUASCAVAGNETTO, C;KOHLER, E
在始新世水平上首次报道了ActePhila属、Reverchonia属和Bischofia属的花粉。记述了这些属和其他一些属，如旱生属、木兰属、叶下珠属和蓖麻属。从古植物地理学的角度来看，法国中始新世的Bischofia(近代亚洲单种属)的出现是重要的。如果像Drypetes和Mallotus这样的属表明始新世早期温暖潮湿的森林环境，那么在始新世末期出现的分类群，如Leptopus类型和Reverchonia类型，表明向更开阔和更干燥的环境进化。
Pollen of the genera Actephila, Reverchonia and Bischofia is reported for the first time from Eocene levels. These genera and others like Drypetes, Mallotus, Phyllanthus and Ricinus are described. From a paleophytogeographical point of view, the occurrence of Bischofia (recent asiatic monospecific genus) in the French Middle Eocene is important. If genera like Drypetes and Mallotus indicate a warm and humid forest environment during the Early Eocene, taxa occurring at the end of the Eocene, such as Leptopus-type and Reverchonia-type indicate an evolution towards more open and dryer environments.