陕南西乡张家沟剖面寒武系下部统宽川铺组发现了大量特异埋藏化石，这些珍贵化石为三维磷酸盐化精美保存，在探索早期生命起源与演化方面意义重大，也是早寒武世前三叶虫时代生物地层对比的重要依据。本文主要对其中一类保存有软躯体的特异埋藏 Olivooides multisulcatus Qian，1977进行描记，该类化石1977年曾在陕西宁强宽川铺生物群首次报道，与本文描记的化石类型相同，产地不同，因而具有地层对比意义。根据在西乡生物群发现的新材料，与 Olivooides multisulcatus进行特征对比，对属征及种内变异特征进行了补充。

Many fossils of Lagerst?tte is found from the Kuanchuanpu Formation of lower Cambrian in Zhangjiagou section，Xixiang，Shaanxi Province．The precious three-dimensionally phosphatized specimens have important research meaning for the origin and evolution of early life． And it is the basis for biostratigraphic comparison at the pre-trilobites-era of early Cambrian． This paper mainly describes Lagerst?tte and soft-bodied Olivooides multisulcatus Qian，1977．This type of fossil was first reported in Kuanchuanpu Biota in Ningqiang，Shaanxi in 1977， which is the same type as fossils described in this article but from different places，thus it has important research meaning to the stratigraphic correlation．According to new discoveries in Xixiang Biota，this paper compares and adds the characteristics and intraspecific variation of Olivooides multisulcatusQian，1977．

国家自然科学基金(No．41572009)；中国科学院南京地质古生物研究所现代古生物学和地层学国家重点实验室(No．173121)；大学生创新训练项目(201710710062，201710710063，201710710240)；质量工程项目(0012-310600161000，0012-310627171808)；长安大学第十届“挑战杯”大学生课外学术科技作品(C-P-B-2，C-P-B-6，C-P-B-8)联合资助