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辛集组及其相当地层是广泛分布于华北地台西南部及南部边缘凹陷带的含磷岩系,其中产三叶虫,如陕西洛南的Bergeroniellus lonanensis Hsiang,Hsuaspis(Madianaspis)houchiuensis Chang;陕西歧山的Hsuaspis (Madianaspis) qishanensis Zhang et zhu;安徽淮
The Xinji Formation and its equivalent strata are phosphoriferous rocks widely distributed in the southwestern and southern marginal sags of North China Platform. They are trilobites, such as Bergeroniellus lonanensis Hsiang and Hsuaspis (Madianaspis) houchiuensis Chang in Luonan, Shaanxi Province, Mountains of Hsuaspis (Madianaspis) qishanensis Zhang et zhu; Anhui Huai