广东南雄盆地南雄群的介形类动物群

LATE CRETACEOUS OSTRACODS FROM THE NANXIONG GROUP IN THE NANXIONG BASIN OF GUANGDONG PROVINCE

南雄群及其介形类化石在我国晚白垩世非海相地层划分对比中占重要地位,主田和杨梅坑剖面主田组和浈水组中有270个样品含介形类化石,计有23属(2亚属)99种(12新种)。南雄群介形类动物群是以Talicypridea,Cypridea,Nanxiongium,Candoniella等4属为主,称Talicypridea Cypridea Nanxiongium动物群(简称Tali cypridea动物群)。该动物群在我国和蒙古的非海相地层中广泛分布,时代属晚白垩世中—晚期。

The taxonomy and biostratigraphy of the Talicypridea-Cypridea-Nanxiongium ostracod fauna from the Nanxiong Group in the Nanxiong Basin is of great importance for the subdivision and correlation of the Upper Cretaceous non-marine strata in China. Abundant ostracods have been recovered in 270 samples from the Zhutian and Zhenshui formations, the upper part of the Nanxiong Group. There are 99 species in 23 genera （including 2 subgenera） figured herein, including 12 new species herein described. This ostracod fauna is dominated by species of the four genera： Talicypridea, Cypridea, Nanxiongium, Candoniella. This ostracod fauna has also been reported from the Upper Cretaceous strata in Mongolia.