本溪地区早侏罗世长梁子组介形类新发现

New Discovery of Ostracods from the Early Jurassic Changliangzi Formation in Benxi Area

摘要: 长梁子组是辽宁本溪地区田师傅盆地下侏罗统中的一套含煤地层，岩性以灰黑色、灰绿色泥岩和泥质粉砂岩为主，其中含有丰富的动、植物化石。本文报道了最新在长梁子组上段发现的部分介形类化石，共1属11种，并提出长梁子组上段介形类化石组合以“花桥达尔文介–桃川达尔文介组合”(Darwinula huaqiaoensis-D. taochuanensis Assemblage)为特征，其中以花桥达尔文介为优势种，提高了本研究区介形类化石的分类研究程度。

Abstract: The Changliangzi Formation is a coal bearing stratum located at the Lower Jurassic of Tianshifu Basin, Benxi area of Liaoning Province, its lithology is mainly gray-black, gray-green mudstone and argillaceous siltstone, which is rich in animal and plant fossils. This article reports certain ostracod fossils recently discovered in the upper member of Changliangzi Formation, there are 11 species in 1 genus, with combination of features according to its ostracod, this paper proposes that the ostracod assemblage from the Upper Member of the Changliangzi Formation is characterized by the Assemblage of Darwinula huaqiaoensis-D. taohuanensis. The new funding has improved the classification level of the ostracod fossils in the studied area.