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First discovery of fossil Diplothrix (Muridae, Rodentia) outside the Ryukyu Islands, Japan

chinese Science Bulletin 2010年第4期55卷 411-417页

作者： wang yuan1,2, jin changzhu1 & wei guangbiao3,41 key laboratory of evolutionary systematics of vertebrates, institute of vertebrate paleontology and paleoanthropology, chinese academy of sciences, beijing 100044, china 2 Graduate University of chinese academy of sciences, beijing 100049, china 3 Chongqing Three Gorges institute of paleoanthropology, china Three Gorges Museum, Chongqing 400015, china 4 Chongqing Three Gorges Culture and Social Development Research institute, Chongqing Normal University, Chongqing 400047, china key laboratory of evolutionary systematics of vertebrates Institute of Vertebrate Paleontology and Paleoanthropology Chinese Academy of Sciences Beijing China Graduate University of chinese academy of sciences Beijing China Chongqing Three Gorges institute of paleoanthropology China Three Gorges Museum Chongqing China Chongqing Three Gorges Culture and Social Development Research institute Chongqing Normal University Chongqing China

The first Diplothrix (Muridae, Rodentia) fossils of the early Early Pleistocene are described as D. yangziensis sp. nov., which were collected from the Renzidong Cave deposits in Anhui Province, Eastern china. Diplothrix was previously represented by a single species, D. legata, whose geographical distribution during the Late Pleistocene is restricted to the Ryukyu Islands, Japan. With straight chevrons on M1, distinct t3 and t9 on upper molars, primitive M3, mlc on m1, and developed a-lab on m2 and m3, the new species is morphologically distinct from other large murids in East Asia, and should belong to the genus Diplothrix. There are also differences in molar morphology between the new species and D. legata, the type species of Diplothrix, as well as other known fossils. For example, D. yangziensis sp. nov. has a smaller size, a more elongated crown, developed precingulum and pc on M1, more primitive M3, weaker mlc and more primitive pc on m1, and stronger plc and pc on m3. In short, Diplothrix yangziensis sp. nov. is evidently more primitive than D. legata, suggesting that the former is likely the ancestor of the latter. Diplothrix yangziensis sp. nov. is the first discovery of the genus outside the Ryukyu Islands, Japan and is also the earliest and most primitive species of the genus in Eurasia. Its discovery has significant implications for reconstructing the evolution and dispersal pattern of Diplothrix, as well as for discussing its palaeoecological variation.

关键词：琉球群岛化石日本鼠科形态差异供应量早更新世中国东部

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The first Sinomastodon(Gomphotheriidae,Proboscidea) skull from the Quaternary in china

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chinese Science Bulletin 2012年第36期57卷 4726-4734页

作者： wang yuan jin changzhu DENG ChengLong wei guangbiao YAN YaLinga key laboratory of evolutionary systematics of vertebrates Institute of Vertebrate Paleontology and Paleoanthropology Chinese Academy of Sciences Beijing 100044 China Department of Geosciences and Don Sundquist Center of Excellence in paleontology East Tennessee State University Johnson City TN 37614 USA State key laboratory of Lithospheric Evolution Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029 China Chongqing Three Gorges institute of paleoanthropology China Three Gorges Museum Chongqing 400015 China

The first Sinomastodon(Gomphotheriidae,Proboscidea) skull of the Early Pleistocene,collected from the Renzidong Cave deposits in Anhui Province,Eastern china,is described here as *** *** the only brevirostrine trilophodont gomphotheriid known from the Old World,Sinomastodon was mainly indigenous to china from the Early Pliocene to the *** with a few single Pleistocene teeth previously found in china,*** *** represented by a relatively complete skull,mandible and dentition,which is the first discovery of a Quaternary Sinomastodon skull from *** a brevirostrine,elephant-like skull,no lower tusks,and simple bunodont and trilophodont intermediate molars,the new species is morphologically distinct from other gomphotheres and should belong to the genus *** new species is more progressive than *** and the Pliocene type species *** in its skull and mandible morphology,but is evidently more primitive than the Pleistocene *** in its molar *** faunal analysis suggests that the emergence of *** *** Jiangnan area and its southward migration may have been related to a cooling event at the beginning of the Quaternary in Eastern china.

关键词：中国东部第四纪长鼻目头骨早更新世骨形态洞穴堆积区系分析

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New materials of the steppe mammoth, Mammuthus trogontherii, with discussion on the origin and evolutionary patterns of mammoths

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Science china Earth sciences 2010年第7期53卷 956-963页

作者： wei guangbiao HU SongMei YU KeFu HOU YaMei LI Xin jin changzhu wang yuan ZHAO JianXin wang WenHua Chongqing Three Gorges institute of paleoanthropology China Three Gorges MuseumChongqing 400015China Chongqing Three Gorges Culture and Social Development Research institute Chongqing Normal UniversityChongqing 400047China Shaanxi Provincial institute of Archaeology Xi’an 710054China South china Sea institute of Oceanology Chinese Academy of SciencesGuangzhou 510301China institute of vertebrate paleontology and paleoanthropology Chinese Academy of SciencesBeijing 100044China Chongqing Natural History Museum Chongqing 400013China Radiogenic Isotope laboratory Centre for Microscopy and Microanalysis(CMM)The University of QueenslandQld 4072Australia Production&Technology Department Strip MineZalainuoer Coal Industry Co.Ltd.Manzhouli 021412China

Recently found materials indicate that the steppe mammoth, Mammuthus trogontherii, survived in northern china into the late Pleistocene. East Asia is the key area of mammoth evolution after the initial radiation of early forms out of Africa and into Eurasia at the beginning of the late Pliocene (c. 3.5–3.0 Ma). M. rumanus, M. meridionalis, M. trogontherii, and M. primige- nius probably formed a continuous and transitional evolutionary lineage within the pan-Eurasian mammoth radiation in East Asia. Each speciation event of the Eurasian mammoths was followed by a rapid and large-scale dispersal event: out of East Asia. Allopatric speciation is the main speciation pattern of Mammuthus. The climatic vacillation was severe and frequent in East Asia from the early part of early Pleistocene (c. 2.6 Ma) onward, which probably brought about successive speciation in East Asia and the subsequent dispersal of the mammoths.

关键词： Mammuthus trogontherii Mammuthus sungari MSE allopatric speciation out of East Asia climate

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The Homo sapiens Cave hominin site of Mulan Mountain,Jiangzhou District,Chongzuo,Guangxi with emphasis on its age

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chinese Science Bulletin 2009年第21期54卷 3848-3856页

作者： jin changzhu PAN WenShi ZHANG YingQi CAI YanJun XU QinQi TANG ZhiLu wang wei wang yuan LIU jinYi QIN DaGong R. Lawrence Edwards CHENG Hai key laboratory of evolutionary systematics of vertebrates Institute of Vertebrate Paleontology and Paleoanthropology (IVPP) Chinese Academy of Sciences Beijing 100044 China School of Life sciences Peking University Beijing 100871 China institute of Earth Environment Chinese Academy of Sciences Xi'an 710075 China Natural History Museum of Guangxi Zhuang Autonomous Region Nanning 530012 China Department of Geology and Geophysics University of Minnesota Minneapolis MN 55455 USA

One of the most hotly debated and frontal issues in paleoanthropology focuses on the origins of modern humans. Recently, an incomplete hominin mandible with a distinctly weaker mental protuberance than modern human and a great variety of coexisting fossil mammals were unearthed from the Homo sapiens Cave of Mulan Mountain, Chongzuo, Guangxi. The mammalian fauna from the Homo sapiens Cave characterized by the combination of Elephas kiangnanensis, first occurring Elephas maixmus, and Megatapirus augustus, and strikingly different from the Early Pleistocene Gigantopithecus fauna and the Middle Pleistocene Ailuropoda-Stogodon fauna of South china could be regarded as an early representive of the typical Asian elephant fauna. Faunal analysis, biostratigraphic correlation, and, most importantly, U-series dating all consistently support an estimate of ca. 110 ka for the age of the fossil Homo sapiens and coexisting mammalian fauna, that is, the early Late Pleistocene. The fauna is mainly made up of tropical-subtropical elements, but grassland elements have a much greater variety than forest elements, which probably indicates a drier climate at that time. This discovery of early Homo sapiens at the Mulan Mountain will play a significant role in the study of the origin and its environmental background of modern humans.

关键词：早期智人木兰人族广西年龄现代人类起源哺乳动物化石哺乳动物群

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