松辽盆地早白垩世淡水沟鞭藻类  

EARLY CRETACEOUS FRESHWATER DINOFLAGELLATES FROM SONGLIAO BASIN, NE CHINA

作　　者：乔秀云[1] 何承全[2] 高瑞祺[1] 

机构地区：[1]大庆石油管理局勘探开发研究院,黑龙江大庆163712 [2]中国科学院南京地质古生物研究所,南京210008

出　　处：《古生物学报》1992年第1期30-38,137-139,共9页Acta Palaeontologica Sinica

摘　　要：本文描述了松辽盆地早白垩世沙河子组一登娄库组(别里亚士期—阿普第早期)淡水角藻类沟鞭藻囊孢4属、5新种和2个未定种,并对拟蝙蝠藻属(Vesperopsis Bint, 1986)进行了修订。The Early Cretaceous dinoflagellate cysts recovered from the Shahezi to Yingcheng Formation (Berriasian—Barremian) and the Denglouku Formation (Aptian) in the Songliao Basin are abundant in quantity but low in diversity, containing five new species and two unnamed species referable to the genera Australisphaera, Balmula, Pseudoceratiurn and Vesperopsis. The dinoflagellate assemblages from the Shahezi Formation and Member 4 of the Denglouku Formation are dominated by Vesperopsis glabra sp. nov. and V. zhaodongensis sp. nov. respectively, and that from the Yingcheng Formation is characterized by Balmula granorugosa sp. nov. The Present ceratioid dinocysts are somewhat similar to those of the Lower Cretaceous Fuxin and Damoguaihe Formations, EN China, and are considered as originating from a freshwater lake under the moist climatic environment. Also described are some other new species, including Australisphaera cruciata sp. nov. and Vesperopsis granulata sp. nov., with an emended diagnosis of Vesperopsis Bint, 1986.

关 键 词：松辽盆地 早白垩世 淡水 沟鞭藻类 

分 类 号：Q914.82[天文地球—古生物学与地层学]