ABSTRACT A new dromaeosaurid dinosaur, Shri devi, from the Late Cretaceous deposit of the Barun Goyot Formation at Khulsan, Mongolia, is described here. The Barun Goyot Formation (herein referred to as the Barun Goyot) is stratigraphically intermediate between the overlying Nemegt Formation and the underlying Djadokhta Formation, where much of the dromaeosaurid diversity has been reported to date. Sediments of the Barun Goyot are typically considered Upper Campanian in age. Although dromaeosaurid remains have been noted to occur in the Barun Goyot for decades, descriptive and taxonomic work has never been completed for the material. The holotype specimen (IGM 100/980) consists of a partially articulated individual preserving the right hind limb; left tibiotarsus; pelvis; and adjacent cervical, dorsal, and caudal vertebrae. IGM 100/980 is referable to a clade with Velociraptor based on the presence of a distinct ambiens tubercle located proximally on the anterior face of the pubis, a well-developed anterior tuberosity proximally located on the ischium, and a rounded longitudinal ischial ridge. It is distinguishable from V. mongoliensis based on a weak fourth trochanter (shared with all other dromaeosaurids) and deep anterior pedicular fossae in the cervical vertebrae; epipophyses in the last four cervicals are not raised but are instead represented by rugose circular scars. A suite of axial and appendicular characters are diagnostic for the new species. New discoveries including Shri devi allow for an improved understanding of dromaeosaurid anatomy, as well as the temporal and regional variation of the dromaeosaurid fauna of Mongolia and Inner Mongolia (Nei Mongol Autonomous Region, China), during the Late Cretaceous.

中文翻译：

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晚白垩世蒙古库尔桑地区的一新驰龙科

摘要 这里描述了一种新的驰龙科恐龙 Shri devi，它来自蒙古 Khulsan 的 Barun Goyot 组晚白垩世矿床。Barun Goyot 组（在此称为 Barun Goyot）在地层上介于上覆的 Nemegt 组和下伏的 Djadokhta 组之间，迄今为止已报告了大部分驰龙科多样性。Barun Goyot 的沉积物在年龄上通常被认为是上坎帕阶。尽管几十年来一直注意到在 Barun Goyot 出现驰龙科的遗骸，但从未完成对这些材料的描述和分类工作。正模标本 (IGM 100/980) 由一个部分铰接的个体组成，保留了右后肢；左胫骨；骨盆; 以及相邻的颈椎、背椎和尾椎。IGM 100/980 可称为具有迅猛龙的进化枝，基于位于耻骨前表面近端的明显环境结节、近端位于坐骨上的发育良好的前结节和圆形纵向坐骨脊的存在。基于第四转子较弱（与所有其他驰龙科动物共享）和颈椎中较深的前蒂窝，可将其与蒙古五龙相区别；最后四个宫颈的骨骺没有凸起，而是由皱纹圆形疤痕代表。一套轴向和附肢特征是新物种的诊断性特征。包括 Shri devi 在内的新发现有助于更好地了解驰龙科的解剖结构，