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记乌米兽亚科 (Urmiatheriinae,Bovidae)一新属 :Lantiantraguslongirostralisgen .etsp .nov.。其主要特征是个体大 ;脸部窄而高 ;吻部细长 ,前颌骨与鼻骨接触 ;鼻骨狭长 ,背面平 ,前端无侧翼 ;鼻切迹位置靠前 ;眶下孔位置低 ,位于P3之上方 ;颊齿中等高冠 ,臼齿列长 ,前臼齿列与臼齿列之长度比小于 60 % ;一珐琅质中孔出现在磨蚀的上臼齿两叶之间 ,靠近唇侧 ;下第一门齿不增大 ;p4的下后尖指向后内 ,与下内尖相连 ;下臼齿具底柱 ;c～p2之间的齿隙长等。它出现在陕西蓝田灞河组下部 ,生存时代为晚中新世早期。
A new genus of Urmiatheriinae (Bovidae): Lantiantragus longirostralisgen. The main features of the individual large; face narrow and tall; slender snout, front jaw and nasal bone contact; long and narrow nasal bone, the back of the flat, no flanking front; nasal notch location; infraorbital hole position is low, located in P3 Of the molar crown, molar long, the molar ratio of premolar and molars less than 60% of the length; an enamel middle hole in the abrasion of the molar between the two leaves, near the labial side; under the first incisor is not Increase; p4 under the point after the tip, and the next tip connected; lower molars with the bottom column; c ~ p2 tooth gap between the length and so on. It appears in the lower part of Qunhe Formation in Lantian, Shaanxi Province and survives in the early late Miocene.