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内蒙古二连盆地沙拉木伦期啮齿类动物群研究
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作者 李琪 李茜 《古脊椎动物学报(中英文)》 CSCD 北大核心 2023年第1期43-70,共28页
内蒙古二连盆地乌拉乌苏地区是亚洲哺乳动物分期中沙拉木伦期哺乳动物群的发现地和经典产地。在以往的研究中鲜少有关于这一地区啮齿类化石的报道。近来,在该地区沙拉木伦组下部地层中发现大量的啮齿类化石,经详细的形态学研究,它们被归... 内蒙古二连盆地乌拉乌苏地区是亚洲哺乳动物分期中沙拉木伦期哺乳动物群的发现地和经典产地。在以往的研究中鲜少有关于这一地区啮齿类化石的报道。近来,在该地区沙拉木伦组下部地层中发现大量的啮齿类化石,经详细的形态学研究,它们被归入1超科4科7属9种,包括梳趾鼠超科的Yuomys cavioides,Gobiomys neimongolensis,G.exiguus以及G.asiaticus;跳鼠科Allosminthusuniconjugatus和Primisminthusshanghenus;仓鼠科Pappocricetodon rencunensis;壮鼠科Hulgana cf.H.ertnia和圆柱齿鼠科Proardynomys ulausuensis。乌拉乌苏沙拉木伦组下部与额尔登敖包“下红层”的啮齿类组合具有高度相似性,两者共同构成了二连盆地沙拉木伦期啮齿类动物群。综合二连盆地乌拉乌苏地点沙拉木伦组下部以及额尔登敖包剖面“下红层”的啮齿类化石,运用最小个体数的方法对二连盆地沙拉木伦期啮齿类动物群的组分和特征进行了分析,结果显示梳趾鼠类最具优势,跳鼠类和仓鼠类次之。通过物种多样性分析,二连盆地古近纪啮齿类动物群呈现出早中始新世以梳趾鼠类为主导类群到晚始新世以仓鼠、跳鼠类为主导类群的转变。内蒙古二连盆地和山西垣曲盆地沙拉木伦期啮齿类动物群的特征存在差异,很可能是由两个动物群所处不同的区域环境所造成的。 展开更多
关键词 内蒙古 二连盆地 乌拉乌苏 沙拉木伦期 啮齿类动物群
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Middle Holocene hunting-gathering culture and environmental background of the steppe area of northern China
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作者 Jiacheng MA Xinying ZHOU +5 位作者 Shixia YANG Huiyun RAO Jiaoyang LI Songmei HU Yimin YANG Xiaoqiang LI 《Science China Earth Sciences》 SCIE EI CSCD 2022年第7期1317-1327,共11页
For a long time,the academic community has known very little about hunter-gatherers in the steppe area of northern China in the mid-Holocene.This article reports on the Ula Usu West site in Siziwangqi Banner,Inner Mon... For a long time,the academic community has known very little about hunter-gatherers in the steppe area of northern China in the mid-Holocene.This article reports on the Ula Usu West site in Siziwangqi Banner,Inner Mongolia,including basic information about the site,animal bones,lithic artifacts and the environmental background.The age of the site is 4.8–4.4 cal.kyr BP,placing it in the Late Neolithic period.Considering integrated evidence from flotation,zooarchaeology,ZooMS analysis and lithic artifacts,the preliminary inference is that the population lived in a hunting-gathering economy.They used lithic tools represented by arrowheads to hunt mainly Antilopinae animals(e.g.,Procapra gutturosa).Pollen analysis suggests that the climate was relatively humid,providing advantageous living conditions for the population.The climate evidence is consistent with a warm event at approximately 4.7 kyr BP.A dry-cold event(4.5–4.0 kyr BP)and the gradual expansion of agriculture and breeding might have resulted in the final decline of the population.This article provides new materials for research on the“last”hunter-gatherers in the steppe area of northern China. 展开更多
关键词 ula usu West site Middle Holocene Northern steppe Hunting-gathering Palynolog
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