古脊椎动物学报2009，Vol.47Issue(2)：153-163,11.
大型鼩鼱Beremendia(食虫目,鼩鼱科)在江南的首次发现及其古气候学意义
FIRST DISCOVERY OF THE LARGE SHREW, BEREMENDIA (INSECTIVORA, SORICIDAE) , FROM THE LOWER PLEISTOCENE OF SOUTH CHINA AND ITS PALEOCLIMATIC IMPLICATIONS
摘要
Abstract
A new species of the large shrew, Beremendiajiangnanensis sp. nov., is described here.The materials were excavated from the Early Pleistocene deposits of Renzidong Cave located on the south bank of the lower reaches of the Yangtze River, near Fanchang County, Anhui Province, South China. The new species is the largest in the genus. It is morphologically more primitive than B. po-haiensis from China, but more advanced than the type species, B. fissidens, from the lower Pliocene of Europe. Beremendia was initially reported from the Pliocene of northern Europe. It had been widely distributed in the high latitude regions of Europe and central Asia with a high population density, and became extinct by the end of the Middle Pleistocene. In East Asia, however, it appeared later, and was only rarely reported from the Early Pleistocene of North China. The origin of the genus is still un-clear. The new species is a typical member of Renzidong fauna which is composed of more than 70 mammals. The analyses of ecological and taxonomic composition of the fauna show that it is noticea-bly distinct from the known Early Pleistocene faunas from northern and southern China and the mod-em local fauna for the reason that it is characterized by the coexistence of both Palearctic and Oriental faunal elements. But the Palearctic elements are somewhat predominate. The occurrence of the Palearctic element, Beremendia, as well as Equus sanmeniensis, Hypolagus, Kowalskia, and Mi-momys, in the present-day Oriental Region strongly indicates that there was a cooling event during the Early Pleistocene, which drove the Palearctic elements to migrate southwards to the south of Yang-tze River. So the southern boundary of the Palearctic Realm was more southernly located than present then. The first discovery of the hygrophilous and cryophylactic large shrew, Beremendia, in the pres-ent-day Oriental Region of East China will be helpful to the study of the evolution of Beremendia, and will provide significant information on the shrew's dispersal events during the Plio-Pleistocene clima-tic transition and the faunistic development of China during Pleistocene.关键词
安徽繁昌/早更新世早期/贝列门德鼩/气候事件Key words
Fanchang County, Anhui Province/ early Early Pleistocene/ Beremendia/ climatic event分类
生物科学引用本文复制引用
金昌柱,张颖奇,孙承凯,郑龙亭..大型鼩鼱Beremendia(食虫目,鼩鼱科)在江南的首次发现及其古气候学意义[J].古脊椎动物学报,2009,47(2):153-163,11.基金项目
中国科学院知识创新工程重要方向项目(编号:KZCX2-YW-106)、国家重点基础研究发展规划项目(编号:2006CB806400)和国家自然科学基金面上项目(编号:40372016)资助. （编号:KZCX2-YW-106）
