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广西百色盆地更新世樟科两种植物角质层研究 总被引:3,自引:0,他引:3
刘裕生 《Acta Botanica Sinica》1990,32(10):805-808
本文描述的具角质层的两块叶化石,产自广西百色盆地更新统长蛇岭组。经与现代植物的角质层对比研究后,确定这两块叶化石分属于樟科的两属两种,即油丹(近似种)(Alseoda-phne cf.hainanensis Merr.)和紫楠(近似种)[Phoebe cf.sheareri(Hemsl.)Gamble]。研究结果表明,角质层在鉴定被子植物化石中具有可靠的价值。 相似文献
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利用最相似现生种类分析法和叶相特征分析法,对产自广西百色盆地早更新世长蛇岭组植物群进行古气候分析.结果表明这个植物群反映的古气候性质是亚热带—热带过渡带,年均温约24℃,年较差约3℃-5℃. 相似文献
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HUANG Sheng-min; LIU Yang; GUO Yao-zhen; HUANG Ming-yang; LIU Kang-ti; HUANG Lin-zhen 《人类学学报》2011,30(03):307
Baifeng Paleolithic site was discovered at Tianyang County,Guangxi in 2009. It is located on the fourth terrace of the right side of the Youjiang River; its geographical position is 23° 45.399'N, 106° 43.636'E. During the survey, 27 stone artifacts were gathered from the surface, including cores(N=3), flakes(N=2), picks(N=14), choppers(N=5) and scrapers(N=3). Lithic raw materials were locally available from ancient riverbeds including quartzite(33%), argillite(22%), quartz(19%), farina sandstone(19%) and breccia(18.82%). Tool blanks were mostly pebbles as only two pick blanks were flakes. Most of the stone artifacts were large or medium in size, and modified by direct hammer percussion. According to typological analysis of these stone artifacts along with comparison to geomorphological and chronological details with other sites of the Baise Basin, we suggest that this site should date to the early Middle Pleistocene. 相似文献
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PEI Shuwen 《人类学学报》2007,26(01):1
The Liuhuaishan Paleolithic site, located on the fourth terrace of the right bank of the Youjiang River, is found near the Jiangfeng village, Youjiang District, Baise City, Guangxi Zhuang Autonomous Region. The site was excavated from October 1 to November 8, 2005, as a salvage archeological project because of the anticipated construction of the Nanning2Baise Expressway. The excavations exposed an area of about 1 000 m2 . <br>Four stratigraphic layers were identified at the site, with a total thickness of more than 11 m. Archaeological materials were mainly unearthed from the 2nd and 3rd layer, two layers of latosols and reticular mottled brick2red clay, 510m —610m in thickness and positioned some 55m—60m above the Youjiang water level. A total of 136 stone artifacts and 37 manuble pebbles were unearthed. <br>The stone assemblage includes cores (N = 45), flakes (23) , chunks (52) and retouched tools (16) . The general features of these artifacts are summarized as follows : <br>1) Lithic raw materials exploited at the site were locally available from ancient riverbeds. More than four kinds of raw materials (silicarenite, quartzite, siltstone and breccia) were utilized in core reduction and tool manufacture , with silicarenite the predominant type. <br>2) The principal flaking technique is direct hammer percussion without core preparation. <br>3) Most stone artifacts (9017 %) are large and medium in size. <br>4) Blanks for tool fabrication are pebbles. Most tools are large in size. <br>5) Only two retouched tool classes are identified, namely choppers and picks. <br>6) Modified tools appear to be retouched by direct hammer percussion, mostly unificially retouched on the one end of the pebbles. <br>This paper is currently the only formal report on any excavated Paleolithic site in the Baise Basin, which contains more than 70 Paleolithic sites. The stone tool assemblage of the Liuhuaishan site shows close associations with the Pebble Tool Industry (Main Industry) in South China. Geomorphological and chronological comparison with other sites of the Baise Basin indicates that the age of the site should be close to the early Middle Pleistocene , which places the Liuhuaishan industry in the Lower Paleolithic in China. 相似文献
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百峰遗址位于广西百色市田阳县境内,地处百色盆地右江南岸第四级阶地,地理坐标为23°45.399'N, 106°43.636'E, 是右江民族博物馆在2009年文物普查时新发现的一处旧石器时代遗址。共采集石制品27件。类型有石核、石片、手镐、砍砸器和刮削器, 其中手镐数量最多;原料来源于遗址附近第4级阶地的砾石层, 类别有石英岩、硅质岩、石英、粉砂岩和角砾岩5种, 以石英岩为主; 石制品以大型和中型为主; 剥片和修理方法主要为锤击法;石核剥片技术表现出剥片者对剥片过程的控制意识。根据地貌和地层推测该遗址年代为中更新世早期。 相似文献
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为鉴定广西百色、永乐两盆地新采集的始新世反刍类,重新研究了中科院古脊椎动物 与古人类研究所以往发现于该地的全部有关标本,将原订的右江印度鼷鹿(Indomeryx youjiangensis)并入百色南方鼷鹿(Notomeryx besensis Qiu, 1978),记述了大南方鼷鹿(新种) (Notomeryx major sp. nov.)和戈壁原驰鹿(未订种)(Gobiomeryx sp.),将印度鼷鹿属 (Indomeryx)、南方鼷鹿属(Notomeryx)、戈壁原驰鹿属(Gobiomeryx)和原驰鹿属 (Prodremotherium)从Gelocidae科中分出并归为一个新科:原驰鹿科(新科) (Prodremotheridas Fam.nov.)。 相似文献
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Bichordites monastiriensis Plaziat and Mahmoudi 1988, produced by burrowing spatangoid echinoids, is figured and described from shallow marine siliciclastic strata of the Pleistocene Old Pera Beds (Coastal Group) of southeast Jamaica. Its occurrence there represents only the second formal recording of this monospecific ichno‐taxon and extends its geographic range from the Mediterranean region to the Caribbean. The spatangoid species that produced this trace fossil is unknown, but, unlike examples from other areas, it is unlikely to be Echinocardium. 相似文献
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陕西洛南人牙化石及其地质时代 总被引:10,自引:2,他引:10
在陕西省洛南县洛河左岸洞穴中,发现一古人类上臼齿,其特点与郧县人牙化石很相似。与人牙化石共存的有大熊猫和獏。后二者比华南洞穴中常见的同类化石明显小,比广西柳城巨猿洞中的小型者要大。从化石特点分析,洛南人牙化石及其所在沉积层的时代为中更新世早期(也有早更新世晚期的可能)。 相似文献
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Xue Xiangxu 《人类学学报》1987,6(04):284
A right M1 of human fossil, associated with a left M1 of Ailuropoda and a right M1 (or M2) of Tapirus, were collected from Qinling Mountains. The exact locality of these fossils is on the hill slope behind the Donghe village, Luonan county, Shaanxi Province.<br>The human fossil tooth is larger than that of modern man, and also larger than the average size of Peking Man, but quite similar to those of Hexian Man, Yunxian Man and Java Man. It possesses the vertical furrows on both lingual and buccal surfaces. The shape of the crown is about rhomboid and has an obvious medial lingual angle. There are a couple of ridges on the slope of each cone. Judging from its morphology and size, Luonan tooth probably belongs to that of Homo erectus.<br>Except the size, the tooth of Ailuropoda is even less likely to be distinguished from those of cormmon panda on its characteristics. The size of the tooth of Luonan Ailuropoda is muclh smaller than that of A. melanoleus baconi, distributing widely in the Middle and Late Pleistocene of southern China and larger than that of 4. microta, a small type of Early Pleistocene, but rather similar to that of A. m. favealis of late Early Pleistocene or modern panda. Owing to its deeper petrification and associated with primitive human fossil, the panda fossil of Luonan would rather belong to A. m. favealis than modern one.<br>According to the fossil evidence and the stage of human evolution, the geological age of these fossils from Luonan may be early Middle Pleistocene or Late Early Pleistocene. 相似文献
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Yun-Feng Li Chun-Lin Sun Hongshan Wang David L. Dilcher Xiao Tan Tao Li Yu-Ling Na 《Palaeoworld》2018,27(2):188-201
The genus Eretmophyllum, a characteristic and widespread taxon of the order Ginkgoales, is restricted in the Mesozoic floras of Eurasia. In China, although some specimens were assigned to Eretmophyllum based on gross leaf morphology, none have epidermal structure, which is essential for species delimitation within this genus. In this paper, we describe a new species, Eretmophyllum neimengguensis n. sp., from the Middle Jurassic Yan’an Formation of the Ordos Basin, China. This is the first record of the genus Eretmophyllum (Ginkgoales) from the Ordos Basin as well as from China based upon the gross leaf morphology and the epidermal structure. The new record significantly extends the stratigraphic and geographic distribution of Eretmophyllum in China and Eurasia. It also improves our understanding of its leaf morphology, epidermal structure, and past diversity. The taxonomic position and the stratigraphic and geographical range of the genus Eretmophyllum are discussed. Briefly, leaf morphological and epidermal characters of the new species, associated plant assemblages, and sedimentology indicate that the regional climate of the Ordos Basin was warm and humid with seasonal temperature and precipitation fluctuations in warm-temperate zone during the Middle Jurassic. Furthermore, given the relationship between the distribution/diversity of the genus and the climate, the genus Eretmophyllum may be confined to the warm-temperature climate, is intolerant of heat and frost, and can be considered as an indicator of humid and warm climatic conditions. 相似文献
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产于广西崇左早更新世(?)洞穴堆积中的一大型豪猪被归入H.magna,从而补充了该种的特征,并依此与Hystrix属中已知各种作了较全面的比较和讨论。 相似文献
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《L'Anthropologie》2018,122(1):14-32
The site of Baigu, in Bose basin, autonomous region of Guangxi Zhuang (China), dated to just over 800,000 years, delivered a rich lithic industry, mainly composed of pebbles tools. This industry consisted by the abundance of heavy and huge pebbles tools, the choppers, the picks massive and the hand-axes. The flakes have been rare retouched. 相似文献
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Wang Jiangke 《人类学学报》1989,8(02):172
Based on the principle of racemization degree of amino acids in fossil increasing with its age, this paper has estimated the ages of fossil bones, teeth and shells fron some Quaternary cave deposits in Juyuandong cave (early pleistocene), Bijiashan cave (middle pleistocene), Bailiangdong cave, Dalongtan rockshelter (late Pleistocene to Holocene) in Liuzhou, Zengpiyan rockshelter (holocene) in Guilin, Guangxi. The results are basically consistent with 14C ages or have been supported by other geological evidences. 相似文献
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广西一些第四纪洞穴堆积中化石的氨基酸地质年龄 总被引:3,自引:1,他引:3
利用化石中氨基酸的外消旋程度随化石年龄增加而增大的原理,本文分别用“校正法”和“高温法”测定了广西柳州早更新世巨猿洞、中更新世笔架山洞、晚更新世一全新世白莲洞、大龙潭及桂林Chen皮岩的一此处第四纪洞穴堆积物中牙化石、骨化石或贝壳化石的氨基酸年龄,测年结果与其它地质证据或^14C年龄基本一致。 相似文献
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滇西北丽江盆地中更新世哺乳动物化石新材料 总被引:6,自引:0,他引:6
本文简记了滇西北丽江盆地的中更新世哺乳动物化石新材料.化石产自东元桥村南东元桥组的河流相灰黄、灰色砂层和砂砾层中,计有8属10种,即Megantereon sp.、Equussp.、Dicerorhinus sp.、Cervavitus ultimus、cf.Axis rugosus、cf.Axis yunnanensis、Rusayunnanensis、Rusa sp.、Muntiacus sp.、Bos sp..动物群中的一些属种出现于元谋盆地“元谋人”动物群中,表现出两地动物群的相似性,这为“元谋人” 时代的确定可能提供新资料. 相似文献
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北京门头沟牛眼洞晚更新世哺乳动物化石 总被引:2,自引:1,他引:2
北京市门头沟牛眼洞产有豹、岩羊和纳呼尔绵羊等3种哺乳动物化石。其中豹化石尺 寸相当小,小于所有已知的化石记录,根据贝格曼法则以及与现代豹不同亚种的对比,表明它 应该是一种热带和亚热带的动物,这一发现指示当时的气候环境正处于间冰阶的暖期中。结 合整个哺乳动物化石的性质,说明其时代为晚更新世晚期。 相似文献