摘要
本文记述了塔里木盆地东北地区早二叠世介形类化石,化石采自柯坪县丘达依萨依剖面萨热哲依组,共计9属15种,其中10新种,并建立了Round yella-Healdia-Sulcella-Bair-dia介形类组合,此组合明显不同于以Bairdia为主的中国南方早二叠世介形类动物群,具有很强的地方色彩,推测此动物群的生活环境为半封闭的、水动力条件较弱、温暖的浅海海湾型环境。
Ostracod fossils described in this paper were collected from the Sarezheyi Formation of the Qiudayisayi section in the northeast area of the Tarim basin. The formation consists lithologically of grayish brown calcareous lithic sandstone, siltstone and silty mudstone. Fossils are rich and include nine genera and 16 species, making up an ostracod fauna represented by Roundyella, Heal-dia, Sulcella and Bairdia. The more abundant forms are Roundyella and Healdia with subordinate Sulcella, Bairdia and Pseudoparaparchites. The new species form the bulk of the fauna, so the fauna displays a very strong endemic character, which makes the fauna notably different from the ostracod fauna dominated by Bairdia in Early Permian strata of southern China. The fossils associated with ostracods are fusulinids, conodonts and foraminifers. This fauna is Early Permian in age and it is inferred that it might belong to the forms living in a warm, semi-enclosed shallow-sea bay environment with weak hydrodynamic conditions.
出处
《地质论评》
CAS
CSCD
北大核心
1999年第5期498-503,T001,共7页
Geological Review
