中國早第三紀正型粉類及相關孢型

Early Tertiary Normapolles and Related Palynomorphs of China (1)

本文研究了中國一些地區古新統及下始新統的正型粉類及其相關的一些花型，共描述48屬152種（包括22個未定種）。本文依據目前資料，詳細論述了正型粉類於晚白堊世和早第三紀早期在中國的分布；同時依據正型粉類的分布劃分中國古新世孢粉植物區系為：(1)東北區，以不含正型粉而僅有Aquilapollenites為特徵；(2)中原區，以僅含有正型粉類為特徵，又分為東南亞區和西北亞區，Aquilapollenites在前一亞區內多少存在，在後一亞區缺乏而相區別。有關各區的孢粉組合及其所代表的植物群及氣候，本文也作了必要的對證。

The Normapolles and other related palynomorphs from Paleocene to Early Eocene in China were discussed using materials mainly from Caomuhao Gypsum Mine from Otog Banner, Inner Mongolia, Funing Group of northern Jiangsu, and Menli Formation from Sanmenxia, Henan. A total of 48 genera and 152 species (including 22 indeterminable forms) were described. The distribution of the normapolles, along with other key taxa such as Aquilapollenites and proteaceous pollen during the Late Cretaceous to Early Tertiary, had divided China into two phytogeographic provinces-Central and Northeast. The former is characterized mainly by the presence of Normapolles and the latter by the presence of Aquilapollenites. The Central Province can be further subdivided into Southeast and Northwest subprovinces with Aquilapollenites also present in the former but absent in the latter. The representative assemblage from each province and subprovince and their climatic implication were also discussed.