摘要
在我国云南省晋宁县梅树村地区下寒武统发现了颗石藻化石，计有两个新属四个新种：微细管碟星藻属（新属）（Ｍｉｃｒｏｔｕｂｅｄｉｓｃｏａｓｔｅｒｇｅｎ．ｎｏｖ．）包括昆阳微细管碟星藻（新属新种）（Ｍｉｃｒｏｕｂｅｄｉｓｃｏａｓｔｅｒｋｕｎｙａｎｇｅｎｓｉｓｇｅｎ．ｅｔｓｐ．ｎｏｖ．）和蜂巢微细管碟星藻（新属新种）（Ｍｉｃｒｏｔｕｂｅｄｉｓｃｏａｓｔｅｒｈｏｎｅｙｃｏｍｂｇｅｎ．ｅｔｓｐ．ｎｏｖ．）；始四枝碟星藻属（新属）（Ｅｏｔｅｔｒａｌｉｔｈｕｓｇｅｎ．ｎｏｖ．）包括银杏叶始四枝碟星藻（新属新种）（Ｅｏｔｅｔｒａｌｉｔｈｕｓｇｉｎｋｇｏｌａｂｕｌａｔｕｓｇｅｎ．ｅｔｓｐ．ｎｏｖ）和管柱始四枝碟星藻（新属新种）（ＥｏｔｅｔｒａｉｌｔｈｕｓｔｕｂｅＰｉｌｌａｒｇｅｎ．ｅｔｓｐｎｏｖ．）。下寒武统的颗石藻化石是迄今为止世界各国已报道的最老的颗石藻化石。
he fossil coccoliths described here are found in the Lower Cambrian in Zhongyicun of Jinning County in Yunnan Province. Two new genera and four new species of discoasters have been identified. The new genus and species are listed as follows: Microtubcdiscoaster gen. nov., including M. kunyangensis gen. et sp. nov.,M. honeycomb gen. et sp. nov., Eotetralithus gen. nov., including E. gin4golabulatus gen. et sp. nov.; E. tubepillar gen. et sp. nov. These forms can be regarded as the oldest fossil coccoliths of all coccoliths that have been hither to reported in every country of world.
出处
《地质科学》
CAS
CSCD
北大核心
1994年第2期130-136,T002,共8页
Chinese Journal of Geology(Scientia Geologica Sinica)
基金
国家自然科学基金
