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1.
记山西榆社晚新生代鼠科化石新属种   总被引:4,自引:2,他引:2  
本文描述了山西榆社盆地晚新生代鼠科化石中的新属种:Huaxiamys primitivus gen. et sp. nov., Huaxiamys downsi gen. et sp. nov., Micromys tedfordi sp. nov., Apodemus qiui sp. nov., Apodemus zhangwagouensis sp. nov.,  相似文献   

2.
本文记述了山西榆社盆地上新世鼩鼱科的两个新种:Peisorexpliocaenicussp.nov.,Soriculuspraecursussp.nov.,并列出了该盆地晚新生代地层中采集到的其它食虫类名单。  相似文献   

3.
泥河湾盆地因产出丰富的哺乳动物化石及众多的旧石器地点而久负盛名。为弄清盆地地层的年代范围,近年开展了包括生物地层学、磁性地层学、沉积学、地球化学、孢粉学等多学科的综合研究。目前主要分歧在于对泥河湾层的年代学认识,表现在生物地层学与磁性地层学研究结果不一致。新种化石材料即是从甄选的典型剖面中采集的。?亚科和鼢鼠亚科由于演化趋势明显并且容易量化、演化速率快,对晚新生代生物地层学的研究具有十分突出的意义。鉴于此,对产自泥河湾盆地的?亚科三个新种(泥河湾模鼠Mimomys nihewanensis sp. nov.、简齿松田鼠Pitymys simplicidens sp. nov.、前中华波尔索地鼠Borsodia prechinensis sp. nov.)及鼢鼠亚科两个新种(稻地上新鼢鼠Pliosiphneus daodiensis sp. nov.、铺路上新鼢鼠P. puluensis sp. nov.)进行了简要记述,以期对泥河湾盆地生物地层学框架的建立有所帮助,并从生物进化的角度为泥河湾层的年代学认识提供新证据。  相似文献   

4.
本文报道了鄂西荆门-当阳盆地晚三叠世九里岗组几种丁菲羊齿(Thinnfeldia)植物,即雅致丁菲羊齿[(新种)Thinnfeldia elegans(sp.nov.)]、南漳丁菲羊齿[(新种)Thinnfeldiananzhangensis(sp.nov.)]、远安丁菲羊齿[(新种)Thinnfeldia yuaanancnsis(sp.nov.)],并对九里岗组植物群的性质进行了扼要的讨论,初步认为该植物群具有我国南、北晚三叠世两个植物群的过渡性质。  相似文献   

5.
秦岭东段李官桥盆地始新世哺乳动物化石新材料   总被引:8,自引:6,他引:2  
李官桥盆地是始新世地层发育较全、哺乳动物化石丰富的盆地。本文报道了该盆地两个始新世化石新地点,哺乳动物共计4目7属8种。其中有5个新种,分别为Kuanchuanius? danjiangensis sp. nov.、Asiocoryphodon progressivus sp. nov.、Gobiatherium minutunz sp. nov.、Lophialetes? primus sp. nov.、Eomoropus? zhanggouensis sp. nov.。动物群的时代可能为中始新世早期。  相似文献   

6.
在晋中大地上,乘车向东南方向行驶,穿过太原盆地之后,便进入太行山以西,浊漳河上游的一个属于高原山地间的小盆地。由于榆社县城座落其中,故有榆社盆地之称。这里不仅晚新生代地层发育,而且古脊椎动物化石相当丰富:更主要的是有着许多远古人类留下的遗物。长期以来,这个地区深受中、外地质古生物和考古学者的关注。  相似文献   

7.
本文简述了陕西汉中地区勉县等地的上新世哺乳动物化石,计12属13种,其中有三个新种: Mimomys hanzhongicus sp. nov., Sinomastodon hanjiangensis sp. nov., Stegolophodon xixitngensis sp. nov..这些化石的发现改变了长期以来认为汉中地区新生代沉积仅属第四纪的看法.  相似文献   

8.
记山西榆社后垴的晚中新世鹿科化石   总被引:4,自引:1,他引:3  
本文记述了产于山西榆社后垴的四种鹿科化石:Metacervuluslepidus,Paracervulusattenuatus,Cervavitusnovorossiaeshanxiussubsp.nov.和Cervavitusnovorossiaeminorsubsp.nov.。它们的产出层位相当于马会组的中部,时代为晚中新世。  相似文献   

9.
描述哈格鸣螽科化石2新属7新种:Circulaboilu aureus gen.et sp.nov.,Circulaboilus amoenus gen.et sp.nov.,Furcaboilus excelsus gen.et sp.nov.,Aboilus stratosus sp.nov.,Aboilus cornutus sp.nov.,Pseudohagala shihi sp.nov.,Bacharaboilus jurassicus sp.nov..标本采自于内蒙古宁城道虎沟中侏罗世九龙山组地层和辽宁西部晚侏罗世义县组地层,现保存于首都师范大学生命科学学院.  相似文献   

10.
本记述了山西榆社盆地上新世quJing科的两种新种:peisorex pliocaenicus sp.nov.,Soriculus praecursus sp.nov.,并列出了该盆地晚新生代地层中采集到的其它食虫类名单。  相似文献   

11.
THE LATE MIOCENE CERVIDAE FROM HOUNAO,YUSHE BASIN, SHANXI   总被引:1,自引:1,他引:0  
FamilyCervidaeGray.l82lSubfamiIyMuntiaeinaePoe0ck,l923GenusMetaceroulusTeilhardetTramert,l937MetaceroulUBlepidusHu,I962(Pl.I,1-4)MaterialAskullwithbrokenantlers(V9337),twopieces0fmandibIes(v9360).RemarksThespecimensarequitesimilartothetypespecimen0fMetacerbu-luslepidus:skullratherbroadandflattened,pedicleswiththesame1engthandpr0-longatedonthefrontalsbyaridge,thedimensionsandthegeneralappearanceofteetharequitesimilar.Butthefirstbifurcationontheantlersofthespecimen(V-9337)is,broaderandc…  相似文献   

12.
上新世-更新世过渡期是新生代全球气候变化的重要拐点之一,此期气候经历了由"暖室"向"冰室"的转变。研究该气候转型期的特征可为科学界和国家层面应对现在和未来的全球气候变暖提供理论基础和实践指导。通过深入研究中国华北山西榆社盆地张村组上新世-更新世过渡期地层中保存的植物大化石、孢粉以及硅藻组合,为重建该时段陆地生态系统中植被演替和气候变化提供坚实的生物学证据。在综合回顾张村组化石植物研究历史的基础上,侧重介绍最近5年在古植被、古气候、古环境以及古大气CO2浓度重建等方面的最新进展。这些新成果定性及定量地刻画了第三纪-第四纪之交中国北方黄土高原东南缘气候变干、变凉的转型过程及其陆地生态系统中大气CO2浓度先升后降的变化趋势。  相似文献   

13.
NEW MURID RODENTS FROM THE LATE CENOZOIC OF YUSHE BASIN, SHANXI   总被引:8,自引:8,他引:0  
<正> As scientific collaborators of the Chinese-American joint project "Neogene Rocks and Faunas, Yushe Basin, Shanxi, PRC", the present authors, with William R. Downs, Northern Arizona University, sampled the Yushe microfauna in the fall of 1987 and 1988. The fossil temains were retrieved by surface collection and by wet-sieving bulk quantities of sediment.  相似文献   

14.
《Palaeoworld》2019,28(3):403-424
Recent excavations at Shanshenmiaozui site in Nihewan Basin of North China uncovered a rich collection of comb-antlered deer, which includes the first discovery of the yearling antler, complete upper and lower dentitions (both deciduous and permanent), associated limb bones including the longest metapodials ever recovered. Based on toothrow length and the dental characters as well as the postcranial bones, the new fossil materials can be referred to Eucladoceros boulei that is estimated to be 350 kg and represents the largest Pleistocene cervid ever recovered in China. Besides the large size, E. boulei is also characterized by the pronounced anterior cingulids and entostylid ribs on lower molars as well as the moderately pachyostosed mandibles. The present study shows that the body weight of large cervids can be estimated by the length of toothrow and metacarpal, with exception for Cervus elaphus, which has larger toothrow length, but shorter metacarpal and smaller body size. E. boulei is a typical element of the Early Pleistocene fauna in northern China. The early Villafranchian is a bottleneck period for cervid evolution in northern China, which is characterized by the following features: decrease of cervid diversity, disappearance of archaic groups, and the rise of the medium to large-sized three-tined cervini taxa. The sudden appearance of the very large and/or multi-tined cervids at the Pliocene–Pleistocene transition may represent a great migration event of mammals. The Early Pleistocene cervids from Nihewan Basin are very diverse, and are in need of more taxonomic work.  相似文献   

15.
<正> In the present paper a new caprine, Sinocapra minor gen. et sp. nov. is erected on the basis of several horn cores. The type specimen was collected by the Sino-American Palaeontology Expedition from the Upper Pliocene, Mazegou Formation, of Yunzhu Subbasin, Yushe Basin, Shansi province in 1988. All the other ones referred to the new genus were described and identified by Teilhard de Chardin and Trassaert (1938, p. 53, fig. 46) as Antilope gen. et sp. indet. They also came from Zhaozhuang, Yunzhu Subbasin and it is likely that they might be gathered from the same Formation as the type specimen judging by the yellow sandy clay filling into the horn cores. Magnetostratigraphic studies by Prof. N. Opdyke of the Yunzhu Subbasin indicates that this stratigraphic interval only includes the Gauss one, approximately 3.4 to 2.47 Ma. Accounts of the biostratigraphy and dating of Yunzhu Subbasin are giyen by Dr. R. H. Tedford and Dr. Z. Qiu in another paper.  相似文献   

16.
A survey of abomasal parasites in cervids from Central Spain was conducted at 3 sites, Quintos de Mora (Toledo), Malué?ez de Arriba (Cáceres), and La Herguijuela (Cáceres). Commonly occurring helminths belonged to 3 polymorphic species of the Ostertagiinae: Spiculopteragia asymmetricalS. quadrispiculata, Ostertagia leptospicularis/O. kolchida, and O. drozdzi/O. ryjikovi. Trichostrongylus axei was found in very few cases. Ostertagia drozdzi/O. ryjikovi and the minor male morphotype, S. quadrispiculata, are reported for the first time in red deer from Spain. The 3 ostertagiine species are also reported for the first time in fallow deer from Spain. These 3 species of Ostertagiinae are primarily parasites of cervids, and nematode species characteristic of domestic ruminants were not present. Prevalence of infection by gastrointestinal parasites in cervids was high, ranging from 97.5 to 100%, across the 3 areas sampled. Mean intensity of infection and abundance showed a positive relationship to the population density of red deer. Helminth burdens were higher in fallow deer than in the sympatric red deer and may reflect the gregarious social structure and different foraging patterns of fallow deer.  相似文献   

17.
本文记述了六件短齿假沙鼠(Pseudomeriones abbreviatus abbreviatus)的上下颌骨,并对在庆阳发现的正型标本和国外有关的新材料做了补充记述和讨论。  相似文献   

18.
本文描述了采自山西榆社盆地上第三系竹鼠类化石的一新种。新种与Rhizomys(Brachyrhizomyr)rhanriur相似,但个体较小,臼齿相对狭长,M,保留有连接下次尖和下次脊的齿襞(mure)及短的下中脊。这两种化石竹鼠在榆社的出现,超越了现生竹鼠类分布的北界,说明该科的情况要比以前知道的更为复杂,也表明榆社地区在晚第三纪时比近代湿润。  相似文献   

19.
重新厘定后,步氏羚羊(Gazellablacki)的主要特征是个体中等大小,脑颅部宽而短,枕面向后突出不明显,枕髁与枕面处在同一平面中,基枕面平,呈方形,具宽浅而长的中纵沟;角心纤细,短而直,从角基向角项方向迅速变尖,基部横切面为次圆形;颊齿高冠,前臼齿列短和p4有封闭的前内谷等。它出现在我国山西上上新统的地层中。依据头骨和颊齿的性状,它可能是现生种G.picticaudata和G.gutturosa的祖先类型。  相似文献   

20.
黄土高原三趾马红土的观察(英文)   总被引:1,自引:0,他引:1  
讨论了黄土高原地区红粘土中脊椎动物化石的考察历史,记录了山西和甘肃"三趾马红土"地点的观察结果。红粘土广泛分布于黄土高原地区,但常被误认为是一个描述性术语,因为其中的许多沉积物既非红色,又不以粘土级颗粒为主。不少红粘土序列中含有古土壤,也含有水成沉积物。此次考察包括榆社盆地的经典地点、灵台任家沟和雷家河,以及庆阳和秦安的一些地点。讨论了在任家沟发现的化石、在玉村新发现的小哺乳动物上新五褶兔( Plio-pentalagus) 和在胡家村观察到的上新世潜穴,后两个地点都位于灵台东北面的庆阳地区。观察结果与晚中新世遍布黄土高原、很可能来自降尘的粘土级颗粒的快速堆积吻合。但在一些区域则以河流或湖泊过程为主,红粘土颗粒部分或全部被水成的粗碎屑沉积物代替,没有找到晚中新世-早上新世干旱化的证据,反而支持高生产力的湿润环境假说。局部富集的脊椎动物化石证明三趾马动物群具有很高的陆生生物量。  相似文献   

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