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采自内蒙古上白垩统二连组的一件标本代表巨龙类的一个新属种。新属种的正型标本包括若干背椎、荐椎和尾椎,部分背肋和脉弧,以及腰带的大部。新属种的鉴定特征包括后部背椎椎弓外侧有一源自后关节突的脊,后部背椎有一板状结构连接椎体—椎体横突板和椎体—前关节突板,前部尾椎尾肋前伸,有两个凹坑,以及肠骨内侧有一源自耻骨柄的直立脊。新属种肠骨气腔化,这一特征在蜥脚类恐龙中非常罕见。新属种具有一套独特的原始和进步特征的组合。初步的特征分析显示巨龙形类具有非常复杂的特征分布。近期的巨龙形类化石发现,这一类群在其早期演化阶段在… 相似文献
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根据一不完整的化石骨架,建立蜥脚类恐龙一新属新种:姜驿元谋龙(Yuanmousaurusjiangyiensisgen.etsp.nov.)。它以背椎神经弓的构造比峨嵋龙的复杂的多,而比盘足龙的简单为特征。背椎上具有9条棱嵴,在神经弓的侧面构成3个窝。背椎神经棘的侧面形成类似于峨嵋龙和巴塔哥龙(Patagosaurus)的上下延伸的槽。元谋龙比峨嵋龙进步而比盘足龙原始。元谋龙和巴塔哥龙相似的背椎构造显示了它们之间有密切的关系。云南省元谋一新的蜥脚类恐龙@吕君昌$中国地质科学院地质研究所!北京,100037
@李绍学$云南省元谋人陈列馆!元谋,651300
@季强$中国地… 相似文献
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本文记述了内蒙古西部阿拉善右旗阿拉腾敖包镇巴音塔拉一带上白垩统乌兰苏海组一件甲龙类不完整头后骨架，其愈合荐骨至少由4枚背荐椎、4枚荐椎组成，最后1对背荐肋中部和远端强烈加宽且显著向后弯曲，游离尾椎10枚，后部尾椎神经棘、前关节突与脉棘明显拉长且包裹后部尾椎椎体，应被归入甲龙亚科Ankylosaurinae的绘龙属Pinacosaurus，但种名暂未确定。阿拉善右旗巴音塔拉也成为绘龙属在内蒙古自治区继乌拉特后旗巴音满都呼、阿拉善左旗“栅栏呼都克”之后的第3个分布地点，扩展了该属化石的地理分布范围，并为阿拉善右旗巴音塔拉与乌拉特后旗巴音满都呼晚白垩世恐龙动物群的对比提供了新的古生物学依据。 相似文献
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LU Jun-chang XU Li ZHANG Xing-liao JI Qiang JIA Song-hai HU Wei-yong ZHANG Ji-ming WU Yan-hua 《地质通报》2007,(7)
根据以下特征,建立驰龙类恐龙一新属新种——河南栾川盗龙(Luanchuanraptor henanensisgen.etsp.nov):牙齿后缘每5mm有24个小锯齿;前部背椎椎体具有小的椎体侧孔;后部脉弧的前后突短且为三分支;最后部的尾椎体的椎体前突拉长且包裹与其相邻的前部椎体,两椎体前突之间夹有低的刀片状的神经棘;乌喙骨的内面强烈凹陷;肱骨骨干直,肱骨三角脊几乎占肱骨长度的前部一半。河南栾川盗龙代表除在亚洲戈壁地区及中国东北地区之外发现的第一件驰龙类化石标本。 相似文献
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豫西栾川地区晚白垩世秋扒组一新的驰龙类化石 总被引：1，自引：0，他引：1
根据以下特征，建立驰龙类恐龙一新属新种——河南栾川盗龙（Luanchuanraptor henartens／sgen．et sp．nov）：牙齿后缘每5mm有24个小锯齿；前部背椎椎体具有小的椎体侧孔；后部脉弧的前后突短且为三分支；最后部的尾椎体的椎体前突拉长且包裹与其相邻的前部椎体，两椎体前突之间夹有低的刀片状的神经棘；乌喙骨的内面强烈凹陷；肱骨骨干直，肱骨三角脊几乎占肱骨长度的前部一半。河南栾川盗龙代表除在亚洲戈壁地区及中国东北地区之外发现的第一件驰龙类化石标本。 相似文献
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鄂尔多斯盆地下白垩统志丹群产出丰富的四足类动物化石:龟类、离龙类、鳄形类、鹦鹉嘴龙类、剑龙类、甲龙类、兽脚类、鸟类和早期哺乳类。采自内蒙古杭锦旗老龙豁子志丹群罗汉洞组剑龙类关联的荐椎与肠骨化石新标本,其形态特征显示该标本可被归为鄂尔多斯乌尔禾龙(Wuerhosaurus ordosensis)。该标本解剖学研究表明,鄂尔多斯乌尔禾龙腰带还具有以下特征:上髋臼面前缘向后凹而后缘内侧更加内凹。鄂尔多斯乌尔禾龙(Wuerhosaurus ordosensis)和新疆准噶尔盆地的平坦乌尔禾龙(Wuerhosaurus homheni)在腰带上存在明显区别:(1)鄂尔多斯乌尔禾龙肠骨前突延伸较短,肠骨前突背缘向后逐渐向背侧拱曲、高度逐渐加大,而平坦乌尔禾龙肠骨前突后端背腹缘大致平行;(2)鄂尔多斯乌尔禾龙上髋臼面较小;(3)鄂尔多斯乌尔禾龙左右肠骨前突延伸方向与中轴线之间的夹角略小于平坦乌尔禾龙。这些区别进一步表明,鄂尔多斯乌尔禾龙和平坦乌尔禾龙是不同的种。 相似文献
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New Nodosaurid Dinosaur from the Late Cretaceous of Lishui, Zhejiang Province, China 总被引：6，自引：0，他引：6 
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下载免费PDF全文 LU Junchang JIN Xingsheng SHENG Yiming LI Yihong WANG Guoping Yoichi AZUMA 《《地质学报》英文版》2007,81(3):344-350
A new genus and species of nodosaurid dinosaur： Zhejiangosaurus lishuiensis gen. et sp. nov. is erected herein. It is characterized by the sacrum consisting of at least three true sacral vertebrae, 5 caudal dorsal vertebrae fused to form the presacral rod, wide divergence of long slender preacetabular process of the ilium from the middle line of the body, and the fourth trochanter located at the femoral mid-length. 相似文献
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XU Xing ZHANG Xiaohong TAN Qingwei ZHAO Xijin TAN Lin 《《地质学报》英文版》2006,80(1):20-26
A specimen collected from the Upper Cretaceous Erlian Formation of Nei Mongol （Inner Mongolia）, China, represents a new genus and species of titanosaurian sauropod. The new taxon is named and described on the basis of the holotype and the only known specimen, which comprises several dorsal, sacral, and caudal vertebrae, several dorsal ribs, one anterior chevron, and much of the pelvis. Diagnostic features of the new species include a thick ridge extending down from the postzygapophysis on the lateral surface of the neural arch of the posterior dorsal vertebrae, a transversely oriented accessory lamina present between the anterior centroparapophyseal limina and the lateral centraprezygapophyseal lamina of the posterior dorsal vertebrae, long, anteroventrally directed caudal rib that bears two distinctive fossae on its posterior margin on the anterior caudal vertebrae and a prominent vertical ridge above the pubic peduncle on the medial surface of the ilium, among others. The ilium is pneumatic, a feature not common among non-avian dinosaurs. The new taxon has an unusual combination of primitive and derived character states. Preliminary character analysis shows a complex character distribution within the Titanosauriformes. Recent titanosauriform discoveries suggest that a significant radiation occurred in Asia early in the titanosauriform evolution. 相似文献
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中国已知的豆齿龙类化石有贵州关岭晚三叠世新铺中国豆齿龙、多板砾甲龟龙及云南富源中三叠世康氏雕甲龟龙。记述了一件楯齿龙目豆齿龙亚目的新材料,产自云南富源法郎组竹杆坡段,时代为中三叠世拉丁期,标本(编号C.1924)现收藏于重庆自然博物馆,该标本保存有完整的背甲、尾椎和四肢的部分骨骼,背甲由500多枚小骨板组成,背甲整体结构与康氏雕甲龟龙相似,但背甲中部无沟和脊,背甲骨板表面无放射沟和嵴,排列更加致密,侧壁相对更为发达,由连接紧密的3～4排骨板组成,四肢骨相对于康氏雕甲龟龙来说更为粗壮。根据上述特征,认为是雕甲龟龙属的一个新种——粗壮雕甲龟龙（Glyphoderma robusta sp. nov.）,这是继康氏雕甲龟龙之后在云南富源发现的第二个豆齿龙类物种。 相似文献
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L Junchang 《《地质学报》英文版》2009,83(1)
A new baby pterodactyloid pterosaur with soft tissue preserved.Ningchengop terus liuae gen. et sp.nov.,is erected based on a nearly complete skeleton with a skull.It was characterized by the skull, slightly longer than the combined length of the dorsal and sacral vertebrae;50 teeth(including upper and lower jaws);short mid-cervical vertebrae;the humerus and the scapula, equal to that of the wing metacarpal in length;the ulna and the femur, equal to that of the first and third wing phalanx in length, respectively.The similar ratio of the wing phalanx 2 to wing phalanx 1 of Ningchengopterus and Eosipterus implies that Ningchengopterus may be close to the ctenochasmatid pterosaur.However, it may also imply that the isometrically growing of the first two wing phalanges exists among some pterosaurs. 相似文献
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A new mamenchisaurid dinosaur, Eomamenchisaurus yuanmouensis gen et sp. nov. is erected based on an incomplete skeleton from the Zhanghe Formation, the Middle Jurassic of Yuanmou, Yunnan Province. The new taxon is characterized by absence of pleurocoels in dorsal vertebrae and the dorsal verterbrae with slightly convex anterior articular surfaces, moderately concave posterior articular surfaces; the fourth trochanter is developed posteromedially on the femur; length ratio of the tibia to the femur is approximately 0.64; and the shaft of the ischium is rod-like. Two fused centra of the posterior dorsal vertebrae （the presumed 9th and the 10th dorsal vertebrae） are similar to those in other mamenchisaurid dinosaurs, including Mamenchisaurus hochuanesis, M. youngi and Chuanjiesaurus anaensis. Therefore, fusion of centra of the ninth and the tenth dorsal vertebrae can be recognized as a synapomorphic character of the Mamenchisauridae. 相似文献
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A Baby Pterodactyloid Pterosaur from the Yixian Formation of Ningcheng,Inner Mongolia,China 总被引：1，自引：0，他引：1
Lü Junchang 《《地质学报》英文版》2009,83(1):1-8
A new baby pterodactyloid pterosaur with soft tissue preserved, Ningchengopterus liuae gen. et sp. nov., is erected based on a nearly complete skeleton with a skull. It was characterized by the skull, slightly longer than the combined length of the dorsal and sacral vertebrae; 50 teeth (including upper and lower jaws); short mid-cervical vertebrae; the humerus and the scapula, equal to that of the wing metacarpal in length; the ulna and the femur, equal to that of the first and third wing phalanx in length, respectively. The similar ratio of the wing phalanx 2 to wing phalanx 1 of Ningchengopterus and Eosipterus implies that Ningchengopterus may be close to the ctenochasmatid pterosaur. However, it may also imply that the isometrically growing of the first two wing phalanges exists among some pterosaurs. 相似文献
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A New Boreopterid Pterodactyloid Pterosaur from the Early Cretaceous Yixian Formation of Liaoning Province, Northeastern China 总被引：2，自引：0，他引：2
Lü Junchang 《《地质学报》英文版》2010,84(2):241-246
<正>A new boreopterid pterosaur:Zhenyuanopterus longirostris gen.et sp.nov.from the Yixian Formation of western Liaoning is erected,based on the complete skeleton with a skull and lower jaws preserved.It is characterized by:a large boreopterid pterosaur with a high number of teeth,where the anterior teeth are much larger than posterior ones;the length of the dorsal + sacral vertebrae is nearly half the length of the skull;ratio of the length of the humerus to metacarpal IV is approximately 91%and the,humerus,femur and third wing phalanx are all equal in length and the feet are specially small.It represents the largest boroepterid pterosaur discovered from western Liaoning and its surrounding areas so far 相似文献
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A new large-bodied theropod dinosaur,Datanglong guangxiensis gen.et sp.nov.,was recovered from the Lower Cretaceous Xinlong Formation of the Datang Basin,Guangxi.It is unique in several features including:posteriormost dorsal vertebra with teardrop-shaped pneumatic foramen confined by enlarged pcdl,acpl and the centrum; posteriormost dorsal with well-developed,horizontal prpl; posteriormost dorsal with a parapophysis projecting more laterally than the diapophysis; brevis fossa shallow with short,ridge-like medial blade; and iliac pubic peduncle with posteroventrally expanded margin.Cladistic analysis supports the idea that this new taxon Datanglong guangxiensis is a primitive member of the Carcharodontosauria in possessing two unambiguous synapomorphies:large external pneumatic foramina and internal spaces present in the lateral surface of ilium,and a peg-and-socket ischiac articulation with the ilium.The presence of the new taxon from Guangxi further confirms that Carcharodontosauria were cosmopolitan large-bodied predators during the Early–mid Cretaceous. 相似文献
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A new long-necked sauropod dinosaur, Yunmenglong ruyangensis gen. et sp. nov., is erected on the basis of an incomplete skeleton from the late Early Cretaceous Haoling Formation of the Ruyang Basin, Henan Province. The characters of the anterior cervical vertebrae, the shape of the neural canal of the dorsal vertebra and the ball-shaped distal end of the neural spine of caudal vertebrae with coarse surfaces differ from other long-necked sauropod dinosaurs. The new genus has characters in common with both Euhelopus and Erketu; it represents the first long-necked sauropod dinosaur recorded from central China to date. The rod-like, well-developed epipophyses and the pleurocoels on the cervical vertebrae indicate that it may be close to Euhelopus, an observation also confirmed by a phylogenetic analysis, which shows that Erketu, Yunmenglong and Qiaowanlong form a clade, and are more derived than Euhelopus. 相似文献