The Stipsellus ichnofabric in the fluvial deposits of Upper Triassic Tanzhuang Formation in Jiyuan, western Henan

The lower member of Tanzhuang Formation (Upper Triassic) in Jiyuan Basin,western Henan is interpreted as the deposit in the high sinuosity fluvial plain.This paper particularly described and analyzed four assemblage types of fluvial deposits,and ascribed Stipsellus ichnofabric as a trace fossil feature of high sinuosity fluvial plain,in which Stipsellus sp.A ichnofabric occurs in floodplain,Stipsellus sp.B ichnofabric occurs in point bar.