对拟蹶鼠属(Sminthoides Schlosser)的重新认识  被引量:6

RESTUDIES IN SMINTHOIDES SCHLOSSER, A FOSSIL GENUS OF THREE-TOED JERBOA FROM CHINA

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作  者:李强[1] 邱铸鼎[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1期24-35,共12页Vertebrata Palasiatica

基  金:中国科学院创新领域前沿项目 (编号 :KB1 2 0 1 2 2 );海外杰出青年基金 (编号 :40 1 2 80 0 4);国家人才培养基金 (编号 :J993 0 0 95 )资助

摘  要:记述了对中国化石拟蹶鼠属SminthoidesSchlosser,1 92 4的材料和现生三趾跳鼠属DipusZimmermann,1 780标本的观察。牙齿的比较研究表明 ,Sminthoides和ScirtodipusSavinov ,1 970与Dipus大小接近、形态构造相似 ,两者均为Dipus的晚出异名 ,建议予以废弃。同时修订了Dipus的属征 ,确定了其化石的归属种。Dipus属自晚中新世出现以来 ,其演化似乎相当稳定 ,地理分布也没有发生过明显的改变。The genus Sminthoides was named by Schlosser (1924) based on a mistaken combination of a dipodid maxilla and two cricetid mandibles from Ertemte and Olan Chorea, Nei Mongol (Inner Mongolia). Schaub (1930, 1934) made a revision and defined the genus on the basis of the maxillary fragment and an M1. Apparently, both Schlosser and Schaub did not notice the strong similarities of Sminthoides to the extant monotypic genus Dipus Zimmermann, 1780 in dental morphology. Nume- rous isolated teeth plus a few maxillae of Sminthoides have been recovered from the Neogene of northern China in the last 20 years or so (Fig. 1; Zheng, 1976; Falhbusch et al., 1983; Cai, 1987; Flynn et al., 1991; Qiu and Wang, 1999; Zhang and Zheng, 2000; Qiu and Storch, 2000; Zheng and Zhang, 2001; Li et al., 2003). The large quantity of the materials affords an opportunity to better understand the fossil jerboa. We studied the dentitions of Dipus and Sminthoides in order to clarify the allocation of the fossil genus.

关 键 词:中国 跳鼠科 拟蹶鼠属 化石 晚中新世 地理分布 牙齿形态 

分 类 号:Q915.873[天文地球—古生物学与地层学]

 

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