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古脊椎动物学报 ›› 2005, Vol. 43 ›› Issue (03): 208-218.

• 古脊椎动物学报 • 上一篇    下一篇

陕西府谷晚中新世蓝牛化石

张兆群   

  • 出版日期:2005-09-15 发布日期:2005-09-15

LATE MIOCENE BOSELAPHINI (BOVIDAE, ARTIODACTYLA) FROM FUGU, SHAANXI PROVNCE, CHINA

ZHANG Zhaoqun   

  • Published:2005-09-15 Online:2005-09-15

摘要: 尽管中国发现的中新羚(偶蹄目,牛科,蓝牛族)化石较少,但由于其重要的生物年代学意义而备受重视,被作为与欧洲Vallesian期动物群对比的重要分子。描述了新近在陕西府谷喇嘛沟发现的头骨标本。依据下颌骨形态与牙齿特征,将其归入Miotragocerus gregarius(Schlosser,1903)。新发现的材料完善了该种的鉴定特征:中等大小的蓝牛类;角心强烈后倾,中等分散度,具前后两条棱,横断面呈椭圆形;雄性个体角心前的额骨部分强烈隆升,雌性个体则无明显隆起;脑颅部分成梯形,其最大宽度在角心后,最小宽

Abstract: Though rarely reported China, Miotragocerus has long been considered as one of the Vallesian equivalent indicators in the companion European faunas. Study on new specimens of Miltragocerus gregarius improves its diagnostic characters. Comparison with European and Pakistan taxa reveals that Miotragocerus possibly migrated into Eastern Asia 8 Ma,and evolved independently into Miotragocerus,which went extinct at the end of late Miocene together with some large bovids, such as all genera of Urmiatheriinae, due to dramatically climate and ecological changes at the end of the Late Miocene.