甘肃灵台雷家河剖面中的[鼠平]类化石与中国[鼠平]类生物年代学进展  

FOSSIL ARVICOLINES FROM THE LEIJIAHE SECTION,LINGTAI, GANSU PROVINCE AND CURRENT PROGRESS OF CHINESE ARVICOLINE BIOCHRONOLOGY

作　　者：张颖奇[1] 郑绍华[1] 魏光飚[2] 

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 [2]重庆中国三峡博物馆三峡古人类研究所,重庆400015

出　　处：《第四纪研究》2011年第4期622-635,共14页Quaternary Sciences

基　　金：国家自然科学基金项目(批准号:40902011);中国科学院知识创新工程重要方向项目(批准号:KZCX2-YW-159)资助

摘　　要：系统记述了产自甘肃灵台雷家河文王沟93001地点和小石沟72074(4)地点的(鼠平)类化石,包括比例克模鼠相似种Mimomys cf.M.bilikeensis、甘肃模鼠Mimomys(Cromeromys)gansuntcus、欧洲异费鼠Allophaiomys deucalion、繁昌维蓝尼鼠相似种Villanyia cf.V.fanchangensis、波尔索地鼠未定种Borsodia sp.、沟牙田鼠Proedromys bedfordi和(鼠平)亚科属种未定Arvicolinae gen.et sp.indet.。将它们在雷家河剖面晚中新世-早更新世综合生物地层剖面上的时代分布与中国其他地点的早期(鼠平)类化石进行了对比,并在此基础上介绍了中国早期(鼠平)类生物年代学的进展,探讨了中国早期觯类生物年代学框架建立过程中面临的主要问题。The Leijiahe biostratigraphic section synthesized from 93001, 93002 and 72074 （4） sections, Lingtai, Gansu represents the geologic time period of Late Miocene-Early Pleistocene, and a comprehensive palaeotological and biostratigraphic study at these localities has provided very solid stratigraphic and faunal evidence for the Late Cenozoic biostratigraphy and biochronology of China. A considerable number of arvicoline fossils have been unearthed from WL15 upward of 93001 section and L5, L1 of 72074 （4）section,which are corresponding to the geological time interval from Pliocene to Early Pleistocene. As fossil arvicolines hold critical importance to the Late Cenozoic biostratigraphic and biochronological study,these fossil arvicolines are identified or re-identified as seven species and systematically described,including Mimomys cf. M. bilikeensis , Mimomys （ Cromeromys ） gansunicus , Allophaiomys deucalion, Villanyia cf. V. fanchangensis , Borsoida sp.,Proedromys bedfordi,and Arvicolinae gen. et sp. indet. Six biozones were established for the Leijiahe synthetic biostratigraphic section,of which the zone Ⅲ＋ Ⅳ represents the geological time interval from 4.8 to 3.6Ma, and zone Ⅴ is correlated to 3.6 -2.6MaE43. Mimomys cf. M. bilikeensis are only found in L5 of the 72074 （4）section, which falls into the zone Ⅳ of the synthetic section. Mimomys （Cromeromys）gansunicus is distributed in WL15, WLll -10 and WL8 of 93001 section and L1 of 7207g（4） section,which has the longest record on the Leijiahe synthetic section, zone Ⅲ to Ⅴ. Villanyia cf. V.fanchangensis is from WL11- 10 and WL8-7 of 93001 section, and falls into zone V. Allophaiomys deucalion and Proedromys bedfordi both fall into zone Ⅵ, and are found in WL6 - 3, WL7＋, WL5 ＋ and WL2 ＋, and WL2 - 1, WL7 ＋ and WL5 ＋ of 93001 section, respectively. Borsodia sp. spans zone V and zone Ⅵ ,and is from WL11 - 10, WL8 and WL3 of 93001 section. The oldest arvicoline in China is Promimomys asiaticus from the Early Pliocen

关 键 词：孵类化石 雷家河剖面 [鼠平]类生物年代学 系统发育关系 演化谱系 

分 类 号：P534[天文地球—古生物学与地层学]