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1.
记山西榆社晚新生代鹿科化石两新种   总被引:2,自引:0,他引:2  
本文记述了山西榆社盆地晚新生代鹿科化石中的两个新种:Eucladoceros proboulei sp.nov.和Procapreolus jinensis sp.nov.,并列出了已鉴定完毕的所有产于榆社盆地晚新生代地层的鹿类动物化石单.  相似文献   

2.
Pierre Teilhard de Chardin was a French Jesuit paleontologist, priest, and philosopher. In the figures published in articles in 1943 and 1951, he attempted to draw a “plausible schematic reconstruction of the natural connections between fossil men” and a “phyletic composition of the human group”. I draw attention to Teilhard's reference to Eoanthropus (“Piltdown Man”) in small print in his figure that was first printed in 1943. Most suspiciously, there is no reference to this (supposedly important) genus in the associated text, nor is there any reference whatsoever to “Piltdown Man” in the article published in 1951. Even as early as January 1913, Teilhard may have been aware that “Piltdown Man” was a hoax or joke, artificially associating a human cranium with a modified orangutan mandible. A new suspect is Edgar Willett (rather than Charles Dawson). Teilhard may have been an advisory accomplice in a joke that went seriously wrong.  相似文献   

3.
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   

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5.
中国更新世兔属化石的厘定   总被引:1,自引:1,他引:0  
在对我国现生兔属各种骨骼特征研究的基础上,通过形态特征的观察与测量数据的分析,修订了已有的兔属化石材料。将周口店第1,2,6,20,山顶洞和东岭子洞等地点以及山东平邑发现的兔标本归入草兔Lepus capensis。以前被归入Lepus wongi种内的标本,除周口店第13地点及蓝田陈家窝子的应属于Lepus teilhardi外,其余地点的皆为Lepus capensis,因此L.wongi失去了原有的意义,为无效种。周口店第16地点的标本归入华南兔Lepus sinensis,是该种目前惟一的化石记录。辽宁营口金牛山的标本暂时归入东北兔Lepus mandschuricus。我国更新世共发现两个化石种和4个现生种。其中化石种Lepus teilhardi和L.ziboensis出现在早更新世晚期至中更新世早期,现生种L.capensis,L.mandschuricus,L.sinensis和L.comus分别出现在中更新世与晚更新世。初步讨论了兔属的起源,认为兔属可能起源于上新世的Trischizolagus。  相似文献   

6.
<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   

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A paleolimnological study can be particularly accurate in situations where the species found in the sediments have persisted in the same lake and can provide a direct modern analogue for interpretation. Lake Tigalmamine, thus, represents an exceptionally favourable context, compared to most paleolakes in North Africa, as this site allows comparing the fossil remains of the Characeae to those produced by the living plants. Tigalmamine is a hydrosystem composed of three karstic lakes located at 1626 m above sea level in the Middle Atlas of Morocco. The site had been the subject of a 16 m long core taken in the center of the central lake under 16 m of water (core C 86 in Lamb and Kaars, 1995 [The Holocene 5 (1995) 400-408]). The section represents the total of the Holocene from 10,200 BP to Present (El Hamouti et al., 1991 [Comptes Rendus de l’Académie des Sciences de Paris 2 (1991) 259-265]; Lamb et al., 1995 [Nature 373 (1995) 134-137]). The latter published a synthesis of the pluridisciplinary studies conducted on this core. Also, the numerous gyrogonites isolated from that core had been determined as Chara hispida (Soulié-Märsche in Benkaddour, 1993 [Changements hydrologiques et climatiques dans le Moyen-Atlas marocain : chronologie, minéralogie, géochimie isotopique et élémentaire des sédiments lacustres de Tigalmamine. PhD thesis, Université Paris-Sud, Orsay (inédit)]). Further fieldwork at Tigalmamine by the authors of the present paper in year 2000 showed that Chara hispida is still present in the lake where it forms a belt of submerged vegetation restricted to the range of 2 to 9 m water depth. This paper describes the morphological and ecological characteristics of the extant Chara hispida as a reference for the interpretation of the fossil remains. Based on these data, the frequency changes of the gyrogonites in the core sediments become significant in terms of bathymetry. The detailed analysis of the charophytes from the core, as a complement to the previous studies, confirms the existence of four Holocene phases with lake level low stand at Tigalmamine. The aim of the present study is to enhance the value of the charophytes as a useful complementary tool for paleolimnological reconstruction.  相似文献   

10.
<正> The Cenozoic deposits of Jingle area was first explored by Teilhard de Chardin & Young in 1929, and six species of mammals: Hipparion houfenense, Gazella blacki Antilospira licenti, Elephas sp., Cervus sp., and Rhinocerotidae gen. indet, were found from the Red Clay in Loc. 1 (Hefeng). Based on the Jingle Fauna, Teilhard de Chardin & Young concluded that the fossil-bearing layer was situated between the typical Hipparion richthofeni Red Clay (Pontian) and the Sanmenian deposits (Polycene) (Teilhard de Chardin & Young, 1930, 1931) and called it "Upper Pontian". Since then, Jingle Formation (or Jingle Red Clay) has been widely used in the stratigraphic generalization of North China (Pei et al., 1963) although its definition and age assignment have never been cleared up. "Jinglean" was put into use for the first time as a stage name by Li et al. (1984, in Chinese) to represent Early Pliocene tentatively: "It may be equivalent to Early Pliocene, more plausibly, it is later ...... Jinglean was temporarily used here to represent Early Pliocene by tradition." In order to make clear the age of Jingle Red Clay and enrich the Hefeng Fauna, a field survey was made in the Summer of 1986 by Chen Xiaofeng and the author. An assemblage of fossil micromammals was unearthed by means of wet-sieving techniques. About 1 ton of sediments from Hefeng (Loc. 86007, or Loc. 1) and Xiagaoai (Loc. 86008, or Loc. 2) in Jingle county (see fig. 1), yielded over 1000 specimens of small mammals. The specimens are from four layers (see table 1), and the present paper only deals with the micromammals from the sand layer and the Red Clay at Hefeng (fig. 2).  相似文献   

11.
Véra Eisenmann 《Geobios》1975,8(2):125-IN14
The fauna yielded by the Nihowan lower pleistocene lacustrine deposits includes two species of Equus beside one Hipparion. Equus sanmeniensis was described in 1930 by Teilhard de Chardin and Piveteau; this species is characterized by its large size and the presence of cups on all incisors. Equus teilhardi nov. sp. is smaller and its lower incisors are devoid of cups. It is the first time that such an absence is noted among eurasiatic Equus; till now only some californian, south-american and african species were known to have lowers incisors without cups. The finding of several Equids in the same deposits and the significance of the lack of cups are briefly discussed.  相似文献   

12.
Saint Jacques is a classic Oligocene fossil locality in China, which was first investigated by P. Teilhard de Chardin and E. Licent in 1923. All the fossil mammals previously reported from the area are Oligocene in age. Here we report some new material of the hyracodontid Ardynia from two lower horizons in the Saint Jacques area. These new specimens represent two species: Ardynia praecoxMatthew and Granger, 1923 and A. ordosensis n. sp. A right lower jaw of Ardynia praecox with complete i1-c shows that i2 is the largest. The new species, Ardynia ordosensis, is characterized by a moderately hypsodont M1 with a pillar-like “crista” and the metaloph connecting the ectoloph distal to the metacone, characters that are more similar to those of A. altidentata than to any other species in Ardynia. The stratum bearing Ergilian Ardynia extends the deposits at Saint Jacques down to the upper Eocene. In combination with early Oligocene microfossils from the strata overlying the upper Eocene Ardynia-bearing layers, it is reasonable to conclude that the Saint Jacques section may bracket, or likely document, the Eocene–Oligocene transition.  相似文献   

13.
中国的脊棱齿象属(Stegolophodon)化石   总被引:6,自引:2,他引:4  
剑齿象属 Stegodon 起源于脊棱齿象属 Stegolophodon,两者都是亚洲大陆晚新生代的特有动物,本文讨论两属中一些种的性质和分类位置问题,并记述了药铺脊棱齿象 Stegolophodon officinalis 的新材料.  相似文献   

14.
内蒙古宝格达乌拉晚中新世副竹鼠化石(英文)   总被引:1,自引:0,他引:1  
描述了1996-2007年间在内蒙古阿巴嘎旗晚中新世宝格达乌拉组采集的副竹鼠化石。材料包括下颌骨1件、牙齿14枚和肢骨4件,分别采自该组的2个地点。根据标本较大的尺寸、形态特征,以及颊齿的釉质曲线高度,宝格达乌拉材料被归入三趾马层副竹鼠Pararhizomys hipparionum Teilhard de Chardin Young,1931。Pararhizomys是一类具高冠、脊形和冠面构造简单颊齿的啮齿动物。该属目前发现的化石地点少,材料也不多,主要集中于中国北方和蒙古高原周缘,其地史分布为晚中新世早期至上新世中期。与鼢鼠类(siphneids)和鼠平类(arvicolids)一样,Pararhizomys属的颊齿有由低冠到高冠发展的趋势,具体表现为牙齿侧面釉质曲线(dentine tract)由平直、远离内外两侧谷底到起伏、接近甚至超过内外两侧谷底。为方便比较,本文为釉质曲线的高度设立"H"指数,即从每侧最深谷的谷底和釉质曲线的最高处取平行于冠面的平行线,此两平行线之间的垂直距离为"H"。H值越大,表明齿冠越低,反之则齿冠越高。尽管目前发现的副竹鼠标本不多,但似乎可以看到从早期到晚期,其颊齿的个体有从小变大,釉质曲线高度H值逐渐减小,即齿冠逐渐增高的趋势。由于Pararhizomys的牙齿形态多少与竹鼠类的低冠竹鼠Brachyrhizomys和竹鼠属Rhizo-mys及拟速掘鼠属Tachyoryctoides有相似之处,故常被与Brachyrhizomys和Rhizomys一起归入竹鼠科(Rhizom yidae),但该属的牙齿不具中脊和下中脊,褶沟少,一般为2-3个,与上述三属有明显的不同。本文对下门齿所作的切片观察也表明,Pararhizomys的釉质层结构与Brachyrhizomys,Rhizomys和Tachyoryctoides者相差甚远,其内层(PI)明显增厚,釉柱和釉柱间质(IPM)的排列方式存在明显差别。颊齿的冠高、冠面形态,以及下门齿的釉质层结构,似乎都表明了Pararhizomys属不大可能归入竹鼠科或速掘鼠科(Tachyorictoididae)。而下门齿釉质层切片显示了Brachyrhizomys与Rhizomys有着高度相似的釉质结构,进一步证明了两者有较接近的亲缘关系。地理分布上,Pararhizomys与Tachyoryctoides属只发现于古北区,伴生的哺乳动物显示了其可能适应偏冷、干旱的草原环境,而Brachyrhizomys和Rhizomys主要局限于东洋区,共生的哺乳动物多能适应温暖、湿润的树林环境。  相似文献   

15.
山西静乐贺丰三趾马动物群与磁性地层   总被引:8,自引:3,他引:5  
对P.TeilharddeChardin(德日进)和杨钟健发现贺丰动物群的山西静乐贺丰剖面作了磁性地层学测量。结果表明:静乐贺丰地点的静乐红土记录了Gauss正极性带,年龄为250-3.00MaB.P,时代为晚上新世。因此,贺丰动物群的古地磁年龄当为250—3.00Ma。  相似文献   

16.
This study focuses on morphometric and systematic analyses of the fossil Vitis seeds, recovered from the Gray Fossil Site (7-4.5 Ma, latest Miocene-earliest Pliocene), northeastern Tennessee, U.S.A. A multivariate analysis based on eleven measured characters from 76 complete fossil seeds recognizes three morphotaxa. Further comparisons with both selected modern and fossil vitaceous specimens confirm that these morphotaxa represent three new species, viz. Vitis grayensis sp. nov., Vitis lanatoides sp. nov., and Vitis latisulcata sp. nov. Furthermore, the close resemblance of the first two fossil grapes (V.grayensis and V.lanatoides) with two East Asian Vitis species provides further support concerning a strong eastern Asian aspect of the Gray fossil biota in the late Neogene southeastern North America, as previously evidenced by both animals (e.g. Pristinailurus bristoli [red panda]) and other plants (e.g. Sinomenium and Sargentodoxa).  相似文献   

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The genus Hemitrochostoma Bergroth, 1913 (Hemiptera, Heteroptera, Plataspidae) is redescribed and reviewed. Two species are recognized: the type species Hemitrochostoma altilabris Bergroth, 1913 (Malaysia: Sarawak), and Hemitrochostoma rutabulum sp. n. (Malaysia: Perak). The following new subjective synonymies are proposed: Hemitrochostoma Bergroth, 1913 = Inflatilabrum Tomokuni, 2012, syn. n.; Hemitrochostoma altilabris Bergroth, 1913 = Inflatilabrum lambirense Tomokuni, 2012, syn. n.  相似文献   

19.
Snails in the closely related trochid genera Phorcus Risso, 1826 and Osilinus Philippi, 1847 are ecologically important algal grazers in the intertidal zone of the northeastern Atlantic Ocean and Mediterranean Sea. Here we present the first complete molecular phylogeny for these genera, based on the nuclear 28S rRNA gene and the mitochondrial 16S rRNA and COI genes, and show that the current classification is erroneous. We recognize nine species in a single genus, Phorcus: estimated by BEAST analysis, this arose 30 (±10) Ma; it consists of two subgenera, Phorcus and Osilinus, which we estimate diverged 14 (±4.5) Ma. Osilinus kotschyi, from the Arabian and Red Seas, is not closely related and is tentatively referred to Priotrochus Fischer, 1879. Our phylogeny allows us to address biogeographical questions concerning the origins of the Mediterranean and Macaronesian species of this group. The former appear to have evolved from Atlantic ancestors that invaded the Mediterranean on several occasions after the Zanclean Flood, which ended the Messinian Salinity Crisis 5.3 Ma; whereas the latter arose from several colonizations of mainland Atlantic ancestors within the last 3 (±1.5) Ma.  相似文献   

20.
Marco Pavia 《Geobios》2004,37(5):631
A new species of Tytonidae, Tyto mourerchauvireae, is described from the Sicilian cave deposits of Spinagallo, Luparello and Marasà, which have yielded a common vertebrate fossil assemblages referred to the early Middle Pleistocene. T. mourerchauvireae nov. sp. shows a pronounced increase in body size compared to other congeneric taxa. It is larger than the extant Tyto alba and the extinct Tyto balearica and Tyto sanctialbani and comparable in size among the Mediterranean taxa only with the extinct Tyto robusta, which differs in some morphological characteristics of the long bones. The insular adaptations of T. mourerchauvireae nov. sp. and the differences from the other forms of the genus Tyto which spread through the Mediterranean area during Neogene and Pleistocene are discussed. The fossil assemblages of the early Middle Pleistocene of Sicily are dominated by extinct giant Gliridae of the genus Leithia and Maltamys; these taxa are regarded as the primary prey items of T. mourerchauvireae nov. sp. The Gliridae remains were analysed microscopically to detect possible modifications of bones and teeth caused by ingestion and digestion processes. This type of analysis, together with the qualitative study of the fossil assemblages, allows to show the taphonomical importance of T. mourerchauvireae nov. sp. as agent of accumulation in such Sicilian fossil assemblages. Incidentally the taxonomic validity of T. robusta is discussed and confirmed.  相似文献   

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