记陕西蓝田晚中新世灞河组4种跳鼠(Dipodidae,Rodentia)化石  

NOTE ON FOUR SPECIES OF DIPODIDS (DIPODIDAE, RODENTIA) FROM THE LATE MIOCENE BAHE FORMATION, LANTIAN, SHAANXI

作　　者：李强[1] 郑绍华[1] 

机构地区：[1]中国科学院古脊椎动物与古人类研究所,北京100044

出　　处：《古脊椎动物学报》2005年第4期283-296,共14页Vertebrata Palasiatica

基　　金：国家重点基础研究发展规划项目(编号:G20000777000);国家自然科学基金项目(编号:40272009);The Academy of Finland Grand(nr.44026);国家人才培养基金(编号:J9930095)资助

摘　　要：描述了陕西蓝田晚中新世早期灞河组的4属4种跳鼠:蓝田原跳鼠(新种)(Protalacta- ga lantianensis sp.nov.)、副跳鼠(未定种)(Paralactaga sp.)、原始三趾心颅跳鼠(新种)(Sal- pingotus primitivus sp.nov.)和小五趾心颅跳鼠(新种)(Cardiocranius pusillus sp.nov.)。蓝田原跳鼠兼有原跳鼠和副跳鼠的特征,可能是原跳鼠向副跳鼠进化过程中产生的一种过渡类型。副跳鼠和原始三趾心颅跳鼠及小五趾心颅跳鼠分别代表了副跳鼠属在中国的最早记录和心颅跳鼠亚科(Cardiocraniinae)在地史上的首次出现。4种跳鼠指示了蓝田地区当时的自然环境可能比现代更加干旱。Although discussion on the phylogenetic classification of jumping mice, birch mice and jerboas is still ongoing, we follow the opinion that the two families Zapodidae and Dipodidae are included in the superfamily Dipodoidea and four subfamilies in the family Dipodidae （Qiu, 1996; Daxner-Hock, 1999）, i.e. Allactaginae Vinogradov, 1925, Dipodinae Fischer de Waldheim, 1817, Cardiocraniinae Vinogradov, 1925 and Euchoreutinae Lyon, 1901. The oldest record of Dipodidae is the genus Protalactaga from the middle Miocene of Quantougou, Gansu and Tunggur, Nei Mongol, which might be derived from a Plesiosminthus-like Oligocene Zapodidae ancestor （Young, 1927; Qiu, 1996, 2000）. At the present, Dipodidae are restricted in the Palearctic Region. They are adapted to an arid environment and distributed in semi-desert or desert regions of northern Africa, southern Europe, central and northern Asia. In China, there are 7 genera and 13 species mainly living in the arid northwestern regions （ Wang, 2003 ）. The dipodids described below were collected by the scientists of the Sino-Finish cooperative project in vertebrate paleontology the field seasons of 1997 -2000. and stratigraphy from Lantian, Shaanxi, during

关 键 词：陕西蓝田 晚中新世 灞河组 跳鼠科 

分 类 号：Q915.873[天文地球—古生物学与地层学]