A new occurrence of the Palaeocarpilius macrochelus (Desmarest, 1822) (Crustacea: Decapoda: Brachyura), from the Middle Oligocene rocks of the United Arab Emirates is systematically and paleogeographically described. The Oligocene Asmari Formation is well exposed on the flanks of Jabal Hafit anticline near Al Ain City, UAE, and represents one of the very interesting fringing reef complex outcrops at the western margin of the Northern Oman Mountains. A relatively well preserved single specimen was collected from the Asmari Formation of Jabal Hafit. The specimen is herein described and assigned to Palaeocarpilius macrocheles (Desmarest, 1822). The present record complements the information on the temporal and spatial distribution of decapods at the southern margin of the Tethyan Ocean during the Middle Oligocene times.

在中新出现Palaeocarpilius macrochelus（Desmarest，1822）（甲壳纲：十足目：短尾），来自阿联酋的中渐新世岩石是系统性和paleogeographically描述。渐新世的阿斯马里组很好地暴露在阿联酋艾因市附近的贾巴尔·哈菲特背斜的侧面，是北阿曼山脉西缘非常有趣的边缘礁复杂露头之一。从贾巴尔·哈菲特（Jabal Hafit）的阿斯马里组（Asmari）收集了保存相对完好的单个标本。本文介绍了标本，并将其分配给大螯虾（Desmarest，1822年）。本记录补充了渐新世中期特提斯洋南缘十足动物的时空分布信息。