关于塔塔尔蹶鼠属(Tatalsminthus)的新认识  

ON TATALSMINTHUS(DIPODIDAE,RODENTIA)

作　　者：王伴月[1] 

机构地区：[1]中国科学院古脊椎动物与古人类研究所脊椎动物进化系统学重点实验室,北京100044

出　　处：《古脊椎动物学报》2009年第1期81-84,共4页Vertebrata Palasiatica

基　　金：科技基础性工作专项(编号:2006FY120400);中国科学院知识创新工程重要方向项目(编号:KZCX2-YW- 120);国家自然科学基金重点项目(编号:40730210)资助

摘　　要：笔者最近在编写“中国古脊椎动物志”的跳鼠科的过程中，发现建立塔塔尔蹶鼠属（Tatalsminthus）的依据不够充分。现就该属及其属型种（可汗塔塔尔蹶鼠Tatalsminthus khandae）的有效性予以探讨。Tatalsminthus was established by Daxner-Hock （2001） based on the specimens collected from Early Oligocene Hsanda Gol Formation of Valley of Lakes in Mongolia. Having compared the specimens of Tatalsminthus with those of the other dipodid genera in Asia （Prisminthus, Banyuesminthus, Allosminthus, Heosminthus, Sinosminthus, Shamosminthus, Parasminthus, Heterosminthus and Litodonomys）, the author found that Tatalsminthus was generically different from the 7 genera （Prisminthus, Heosminthus, Sinosminthus, Shamosminthus, Parasminthus, Heterosminthus and Litodonomys） in tooth features indeed, as mentioned by Daxner-Hock, however, not so clearly from AUosminthus as Daxner-Hock thought. Daxner-Hock （2001：361 ） stated： ＂It （ = Tatalsminthus） differs in the protoloph II （M1） and metalophid I （m2） from Allosminthus. ＂ In her description both the protoloph II of M1 and metalophid I of m2 of Tatalsminthus are complete. Wang pointed out as early as in 1985 （pp. 356,359） that the metalophid I of m2 of Allosminthus varied from absent to complete. While synonymizing Banyuesminthus with Allosminthus, Wang （2008：22） indicated further that the protoloph II of M1 in Allosminthus also varied from absent to complete. This blurs the distinction between Allosminthus and Tatalsminthus. Tatalsminthus thus to be considered as a junior synonym of Allosminthus. Nevertheless, Daxner-Hock＇s A. khandae should be a valid species of Allosminthus, since it differs from all the other four known species of Allosminthus in some features. It differs from A. ernos, A. majusculus, A. diconjugatus, A. uniconjugatus in lacking metalophid II on m2- 3 ; from A. ernos, A. diconjugatus, A. uniconjugatus in having more developed mesoloph, often joining with postero-external crest of paracone on M1- 2 ; from A. ernos and A. uniconjugatus in having complete protoloph II on M1 ; from A. ernos in having mesostyle on M1-2 and metaloph joining with hypocone on M1 ; from A. majusculus, A. diconjugatus and A. uniconjug

关 键 词：亚洲 古近纪 跳鼠科 

分 类 号：Q915.873[天文地球—古生物学与地层学]