摘要
二叠纪丑中虫科放射虫中有一类顶锥部分向腹边弯曲的放射虫，Ｉｓｈｉｇａ称为Ｆｏｌｌｉｃｕｃｕｌｌｕｓｂｉｐａｒｔｉｔｕｓ－Ｆ．ｃｈａｒｖｅｔｉ组合带，由于其形状奇特，层位稳定，已成为二叠纪较好的标准带化石，并与类Ｌｅｐｉｄｏｌｉｎａｋｕｍａｅｎｓｉｓ带对比。目前这类化石仅在东南亚地区的西南日本、菲律宾巴拉望地区和中国广西钦州地区发现表明，这些地区的放射虫当时很可能是在同一个洋盆中沉积的，只是由于它们各自的沉积历史不一样，以及后来的板块活动，造成了原始块体的离散、飘移，形成目前这种分布格局。这个放射虫动物群包括６科１１属２１种（比较种、未定种），其中有新种１个。这个动物群的时代要早于晚二叠世。
Radiolarians with partially sinuated apical cone toward ventral side in the Permian Family Follicucullidae, were assigned to the Follicucullus biparritus-F. charveti Assemblage Zone by lshiga (1986, 1990). Owing to their special forms and stable stratigraphic position, they have already become Permian zonal fossils which may correlate with the fusulinid Lepidolina kumaensis Zone of Japan. The discovery of this fauna in Southwest Japan and northern Palawan Block,the Philippines, as well as in Qinzhou area, South China of Southeast Asia demonstrates that the localities mentioned above might belong to the same ocean basin at that time. Only the difference in their respective depositional history and the subsequent activity of the plates,caused the separation and movement of the primary block which later accreted on different terranes,forming the present pattern.This radiolarian fauna contains 6 families,11 genera and 21 species-level taxa and is considered as earlier than Late Permian in age.
出处
《微体古生物学报》
CSCD
北大核心
1994年第2期201-212,共12页
Acta Micropalaeontologica Sinica
关键词
放射虫
Follicucullus
组合带
二叠纪
Radiolaria, Follicucullus bipartitus-F. chareeti Assemblage Zone,Permian, Guangxi
