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.
出处
《古生物学报》
CAS
CSCD
北大核心
1992年第1期30-38,137-139,共9页
Acta Palaeontologica Sinica
关键词
松辽盆地
早白垩世
淡水
沟鞭藻类
Songliao Basin, Berriasian-Aptian, ceratioid dinocysts, freshwater.
