陕西宁强宽川铺地区灯影组宽川铺段的原始锥石类Carinachitids中,新发现了五辐对称新属种——五分宁强锥石(新属、新种)Pentaconularia ningqiangensis gen.et sp.nov.。本文对这一新属种进行了描记。结合前人发现的两辐对称、三辐对称、四辐对称的Carinachitids系列标本,作者对原始锥石类分类方案进行了重新修订,新发现增加了我们对原始锥石类多样性的认识。 Pentaconularia ningqiangensis gen.et (New Genus, New Species) Newly Discovered in the Carneachitids, the Original Cone-Type Carinachitids of the Dengying Formation Kuanchuanpu Section, Ningqiang Kuanchuanpu Area, Shaanxi Province, sp.nov .. This article describes the new species. Combined with the previously discovered Carinachitids series of two-spoke, three-spoke, four-spoke symmetry, the authors revised the original cone-stone classification scheme. The new findings increase our understanding of the original cone-stone diversity.