广西扶绥东罗二叠纪长兴期海相层中的植物大化石

首次描述埋葬于长兴期海相地层中的一个高地植物群,计14属23种,包括4新种,2相似种和11未定种。概略论述植物群的性质及其埋葬特征和生态意义。以松柏植物和Taeniopteris等为代表的裸子植物在这一植物群中占61%,显示由古生代向中生代过渡的性质。这一植物群与华北同期的高地植物群在属种组成上很不相同,显示两地在区系性质上的差异。

PLANT MEGAFOSSILS FROM THE PERMIAN CHANGHSINGIAN MARINE DEPOSITS OF FUSUI, GUANGXI, CHINA

SummaryA taphoflora from the marine Changhsiangian deposits in the area of Dongluo Town, Fusui County, Guangxi Zhuang Autonomous Region is described for the first time. The flora is composed of 14 genera and 23 species, including four new species. The characteristics of the flora as well as its taphonomic and ecological significance are also briefly discussed.Gymnosperms occupied 61% of the total content in this upland flora, while the gymnosperms in the coal-forming lowland flora of the neighbouring area only made up 33% of the floral content. Thus it can be seen that the upland flora from Fusui, Guangxi reveals a transitional character of the land floras from the Palaeozoic to the Mesozoic.In addition, the specific composition of the described flora is quite different from that of the coeval upland flora from North China. Consequently, the Changhsingian upland floras from North and South China are not attributed to the same phytogeographic province as usually considered.