叶月贝腕足动物群是晚奥陶世海洋较深水底域中一个重要的底栖壳相动物群。文中首次报道了在新疆东南部库鲁克塔格地区却尔却克山上奥陶统杂土坡组发现的叶月贝动物群，包括腕足动物5属5种(含两个未定种)，分别为：Apatobolus cf．plicatus，Lingulellasp．，Foliomena xinjiangensis，Kassinella (Kassinella)cf．tch-ingisensis和Eoplectodonta sp．。壳相化石与笔石共同产出，保存在深灰色泥岩中，推测大致相当于 BA5甚至稍深的底域环境。在同一条剖面上，叶月贝动物群曾报道于层位稍高的银屏山组[上奥陶统凯迪阶(Katian)上部]，二者之间可能存在分类学和古生态学的联系。叶月贝腕足动物群在塔里木板块的持续发育为深入开展这一古板块的古地理重建提供了依据。

Foliomena Fauna is an important brachiopod fauna of Late Ordovician age．Its occurrence in the Zatupo Formation (lower-middle Katian，Upper Ordovician)of Querqueke Mountains，Kuruktag Region，southeastern Xinjiang is documented here for the first time．It includes 5genera and 5species of brachiopods：Apatobolus cf．plicatus，Ling- ulella sp．，Foliomena xinjiangensis，Kassinella(Kassinella)cf．tchingisensis，Eoplectodonta sp．Tiny well-preserved brachiopods were found toge-ther with graptolites in the dark-grey mudstone and shale indicating a relatively deep water enviro-nment(corresponding to BA5or deeper)．It may share some similarities with the Foliomena Fauna from the Yinpingshan Formation(upper Katian)of the same section，providing some clues to the paleogeographical reconstruction of Tarim paleo-plate in the Late Ordovician．

国家自然科学基金(41290260，41521061，41530103)；现代古生物学和地层学国家重点实验室基金联合资助；本文是IGCP 653项目(The Onset of the Great Ordovician Biodiversification Event)的阶段成果