The early Famennian phacopid trilobites Feistops mongoliensis gen. nov. sp. nov., Feistops khovdensis gen. nov. sp. nov., ?Feistops sp. A, and ?Houseops olonbulagensis sp. nov. are recorded and illustrated from the western Mongolia Hushoot Shiveetiin gol section from the Baruunhuurai Terrane of the Central Asian Orogenic Belt (CAOB). In this section, exposing large parts of cyclic Famennian shallow-water siliciclastic shelf deposits, Feistops mongoliensis gen. nov. sp. nov., Feistops khovdensis gen. nov. sp. nov., ?Feistops sp. A, and ?Houseops olonbulagensis sp. nov. are the first known and described representatives of trilobites from Late Devonian deposits of western Mongolia. Their affinities with known other sighted species of the same age are discussed.

Famennian早期的盘状三叶虫Feistops mongoliensis gen。十一月 sp。十一月，Feistops khovdensis gen。十一月 sp。十一月 Feistops sp。A和？Houseops olonbulagensis SP。十一月 记录和插图来自中亚造山带（CAOB）的Baruunhuurai地带的蒙古西部Hushoot Shiveetiin火山岩段。在本节中，将暴露大部分的法门尼属浅水硅质碎屑陆架沉积物，蒙古绿豆（Feistops mongoliensis gen）。十一月 sp。十一月，Feistops khovdensis gen。十一月 sp。十一月 Feistops sp。A和？虎耳草sp。十一月 是最早发现和描述的蒙古西部晚泥盆纪矿床的三叶虫代表。他们与相同年龄的其他已知物种的亲缘关系进行了讨论。