鱼粪化石特征对早侏罗世托阿尔期湖泊生态系统的启示:以川东大安寨段为例*
周小梅1, 金鑫1,2, 吴强旺1, 葛禹1, 时志强1,2

Enlightment of fish coprolites characteristics on lake ecosystem in Early Jurassic Toarcian: taking the Da’anzhai Member in northeast Sichuan Basin as an example
Zhou Xiao-Mei1, Jin Xin1,2, Wu Qiang-Wang1, Ge Yu1, Shi Zhi-Qiang1,2
螺旋型粪化石类型(据 Dentzien-Dias et al ., 2012 ) A—异极边缘,螺旋纹分布于粪化石的末端;B—典型异极,螺旋纹集中于粪化石的一端,间隔紧密,不同类型的粪化石螺旋纹数量不等;C—双极,螺旋纹均匀的布于整个化石,数量少,间隔宽阔( Neumayer,1904 )