甘肃窑街侏罗纪Yuchoulepis szechuanensis Su的发现及地质学意义  

THE DISCOVERY OF JURASSIC YUCHOULEPIS SZECHUANENSIS SU FROM YAOJIE, GANSU PROVINCE AND ITS GEOLOGICAL SIGNIFICANCE

作　　者：张现军[1] 阎德飞[1] 孙柏年[1] 

机构地区：[1]兰州大学资源环境学院,甘肃兰州730000

出　　处：《甘肃科学学报》2003年第2期45-48,共4页Journal of Gansu Sciences

基　　金：国家自然科学基金资助(49972013)项目

摘　　要：　对甘肃中侏罗统窑街组油页岩段中的四川渝州鱼化石进行了初步研究,认为该油页岩段的形成时代应为中侏罗世阿林期(Aalenian)——巴柔期(Bajocian).并利用埋藏学和现代湖泊学的研究,结合含鱼化石上、下地层中生物类群的特点,推测了当时鱼群生活的环境及其死亡原因,论证了此期的气候特点为温暖潮湿性.A preliminary study has been finished about Yuchoulepis szechuanensis Su collected from the oil shale member of the middle Jurassic Yaojie fromation of Gansu. Authors think that the time of the oil shale member should be from Aalenian to Bajocian. According to the evidence of fossil assemblages, atrata features, taphonomy and research of modern lake conditions, the paleovenvironment and the cause of fish death are explored with the conclustion that the paleoclimatic character was warm and wet.

关 键 词：四川渝州鱼 中侏罗世早期 淡水湖 还原环境 

分 类 号：Q915.86[天文地球—古生物学与地层学]