普氏野马头骨和牙齿研究

Study on Teeth and Skull of Equus Przewalskii Kiang

研究了北京动物园保存的４例（♂２、♀２）普氏野马的头骨和牙齿，同时与９例（♂４、♀５）西藏野驴、４例（♂２、♀２）斑马的头骨和牙齿作了比较。结果：普氏野马在鼻骨、泪骨、腭正中缝、下颌骨腹缘面上，以及原尖、马刺、齿棱、齿槽等方面，都具有区别于西藏野驴、斑马的形态特征。

During 1984～1994, the authors had conducted a study on the skull andteeth of E. przewalskii, and the comparisons with those of 9 specimens of E. hemiconuskiang and 4 specimens of E. burochelli Whre made in the meantime. It was shown thatthere are some morphological features in E.przewalskii different from the latter twospecies.In E.przewalskii, the nasal bone is slightly straight and lacrimal bone in faciesis more coarse with lacrimal bone nodes. The front part of mandibula bend upwords onventralis.The line between the suture of the parate bone and P2 fused. Infraorbitaleforamina located back.The length and shape of protocone have morphological character-istics.The E.przewalskii has much more pli caballine and pli cabllind than E. hemiconusand E. burchelli.The length and shape of check teeth in E. przewalskii kiang are longer.