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1.
A New Gigantic Sauropod Dinosaur with the Deepest Known Body Cavity from the Cretaceous of Asia 总被引：1，自引：0，他引：1 
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下载免费PDF全文 XU Li ZHANG Xingliao HU Weiyong WU Yanhua JIA Songhai JI Qiang 《《地质学报》英文版》2007,81(2):167-176
A new species of sauropod dinosaur Huanghetitan ruyangensis is erected based on the following characters： deepest body cavity with a dorsal rib reaching at least 2.93 m long, anterior caudal vertebrae with mushroom-shaped neural spines. Based on this new specimen of Huanghetitan found in the early Late Cretaceous Mangchuan Formation of Ruyang, Henan Province, the family Huanghetitanidae faro. nov. is proposed as a new rank to include only the genus Huanghetitan You et al. 2006. At present, Huanghetitan includes two species： H. liujiaxiaensis You et al., 2006 and H. ruyangensis sp. nov. The systematic relationships of Huanghetitan among sauropod dinosaurs are briefly discussed. 相似文献
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A new titanosauriform sauropod Dongyangosaurus sinensis gen. et sp. nov. from the early Late Cretaceous of Dongyang County, Zhejiang Province, is erected based on a partial postcranial skeleton. It is characterized by complex laminae on the lateral surface of the neural spines and postzygapophyses of dorsal vertebrae, a distinct fossa on the ventral surfaces of the prezygapophyses of dorsal vertebrae, distinct fossae are also present on the lateral surface of the postzygapophysis of anterior caudal vertebrae; pubis is shorter than ischium, the small obturator foramen of pubis elongated, and nearly closed. The lamina complexity of dorsal vertebrae in Dongyangosaurus indicates that a higher diversity of titanosauriformes occurred during the early Late Cretaceous in China. 相似文献
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A new dinosaur sauropod from the Golmayo Formation (upper Hauterivian-lower Barremian) in Soria province (Spain) is described as Soriatitan golmayensis gen. et sp. nov. The new material consists of one tooth, three dorsal vertebrae with ribs, a partial sacrum, five caudal centra, two caudal vertebral spines, one chevron, a humerus, an ulna, a radius, two partial ilia, two ischia, a fragment of pubis, and a partial femur. Cladistic analysis identified the material as belonging to Brachiosaruidae within Titanosauriformes. Sauropod material from the Golmayo Formation shares a diagnostic feature with Abydosaurus, Cedarosaurus, Tastavinsaurus and Venenosaurus including anteriorly deflected anterior–middle caudal neural spines and with Cedarosaurus a proximodistally straight lateral margin between the proximal head and the shaft of the humerus. Eight characters are potential autapomorphies in the sauropod from Spain, including the presence of a large rectangular ventral ridge below the preacetabular process of the ilium, the same length of the pubic and ischiadic blades in the ischium, and two lateral ridges in the lateral area of the deltopectoral crest of the humerus. The presence of Early Cretaceous brachiosarids in both, North America and Europe, give support to the hypothesis of a connection between the tectonic plates of these continents at some point during the Early Cretaceous. 相似文献
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ZHANG Xingliao L Junchang XU Li LI Jinhua YANG Li HU Weiyong JIA Songhai JI Qiang ZHANG Chengjun 《《地质学报》英文版》2009,83(2)
A new sauropod dinosaur Baotianmansaurus henanensis gen. et sp. nov. from the Cretaceous Gaogou Formation of Neixiang, Henan Province is erected. It is characterized by somphospondylous presacral vertebrae; a highly-developed lamina system on the dorsal vertebrae; transverse process supported by four laminae; and the dorsal portion of the anterior centroparapophyseai lamina is bifurcated, with a small branch extending to the ventral surface of the prezygapophysis. It represents a new titanosauriform sauropod. 相似文献
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A New Sauropod Dinosaur from the Late Cretaceous Gaogou Formation of Nanyang,Henan Province 总被引：1，自引：1，他引：0
ZHANG Xingliao Lü Junchang XU Li LI Jinhu YANG Li HU Weiyong JIA Songhai JI Qiang ZHANG Chengjun 《《地质学报》英文版》2009,83(2):212-221
A new sauropod dinosaur Baotianmansaurus henanensis gen. et sp. nov. from the Cretaceous Gaogou Formation of Neixiang, Henan Province is erected. It is characterized by somphospondylous presacral vertebrae; a highly-developed lamina system on the dorsal vertebrae; transverse process supported by four laminae; and the dorsal portion of the anterior centroparapophyseal lamina is bifurcated, with a small branch extending to the ventral surface of the prezygapophysis. It represents a new titanosauriform sauropod. 相似文献
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<正>A new sauropod dinosaur,Liubangosaurus hei gen.et sp.nov.,is erected based on a specimen represented by five articulated middle-caudal dorsal vertebrae,which was discovered in the Lower Cretaceous Napai Formation of Guangxi Province,southern China.This new taxon is diagnosed by a unique combination of derived features:prezygapophysis closely contacts with parapophysis,with the prdl and prpl absent;presence of cavity on the dorsal surface of the diapophysis;neural spine very low,with its distal end level with that of diapophysis;distal end of the neural spine strongly expanded laterally to form a platform;marked fossa formed between the infradiapophyseal lamina and the parapophysis;broad,flat area of featureless bone on lateral surface of neural arch;vertically directed infradiapophyseal lamina expands or bifurcates ventrally to form a inverted "Y";highly positioned parapophyses large and tear-drop in shape.The discovery of this new taxon increases the diversity of sauropods in China during the Early 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
8.
兰州—民和盆地位于中国西北横跨甘肃和青海两省的毗连地区,其中广泛发育出露良好下白垩统河口群。近年来,在该盆地东部的兰州盆地产出了一个前所未知的脊椎动物组合,其中以诸多的足印化石和世界已知最大牙齿的植食性恐龙——巨齿兰州龙(Lanzhousaurus magnidens)为代表,还包括一类宽臀的基干巨龙型类蜥脚类——刘家峡黄河巨龙(Huanghetitan liujiaxiaensis),以及许多其他尚未发表的恐龙、鱼类和龟类。本文报道在该地区河口群中所发现的第二种新的蜥脚类恐龙——炳灵大夏巨龙(新属新种)(Daxiatitan binglingi gen.et sp.nov.)。炳灵大夏巨龙的正型标本现存于甘肃省地矿局第三地质矿产勘查院古生物研究开发中心(兰州)。该标本包括最后的10枚颈椎,10枚背椎,2枚近端尾椎,部分颈肋和背肋,1枚脉弓,右肩胛骨,右乌喙骨和右股骨。估计其颈部长度为12.2m,整个身体长度为26m,使其成为中国乃至亚洲最大的恐龙之一。大夏巨龙是巨龙类的一个基干分子[其支干定义为:与盐龙(Saltasaurus)而不与腕龙(Brachiosaurus)更具亲缘关系的巨龙型类],其以如下特征区别于其他巨龙类分子:颈椎的前关节面后移;肩胛骨骨体的远缘与其长轴斜交;股骨远端髁相对于股骨体向背侧方倾斜10°,而且从远端看,该远端髁处于后内—前侧方向。大夏巨龙独特的股骨构造指示出一种强烈外撇的走步姿态。同时,这种姿态也得到了保存于刘家峡恐龙国家地质公园同一层位(河口群上段)的强烈外转的、宽间距的蜥脚类恐龙行迹的进一步佐证。炳灵大夏巨龙的发现丰富了兰州盆地脊椎动物组合,对研究巨龙类恐龙的起源和早期演化具有重要意义。 相似文献
9.
A Titanosaurian Sauropod Dinosaur with Opisthocoelous Caudal Vertebrae from the Early Late Cretaceous of Liaoning Province, China 总被引：4，自引：0，他引：4
Matthew C. LAMANNA 《《地质学报》英文版》2004,78(4):907-911
We describe a new titanosaurian sauropod dinosaur, Borealosaurus wimani gen. et sp. nov., based on a distinctive mid-distal caudal vertebra from the early Late Cretaceous Sunjiawan Formation exposed in the Shuangmiao village of Beipiao in Liaoning, China. We provisionally refer an isolated tooth crown, a middle caudal vertebra, and a right humerus from the same locality and horizon to this taxon. Borealosaurus is distinguished from other sauropods in its possession of opisthocoelous mid-distal caudal vertebrae. The occurrence of opisthocoelous caudals in Borealosaurus and the Mongolian sauropod Opisthocoelicaudia raises the possibility that these taxa pertain to an as-yet unrecognized titanosaurian subclade endemic to the Cretaceous Asia. 相似文献
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Based on a new nearly naturally preserved skull and four cervical vertebrae of the pterosaur Feilongus sp. from the lower Cretaceous Jiufotang Formation of Beipiao, western Liaoning province, northeastern China, the diagnosis of Feilongus is amended. The revised diagnosis notes long, curved, needle-shaped teeth that are confined to the jaw far anterior to the nasoantorbital fenestra; posterior teeth that are slightly smaller than the anterior teeth; cervical vertebrae elongated with a ratio of length to width greater than 5; tooth number of about 78; and two cranial sagittal crests. 相似文献
12.
We describe new and redescribe previously discovered sauropod dinosaur material from the Upper Cretaceous (middle Cenomanian–Turonian) Bajo Barreal Formation of south-central Chubut Province, central Patagonia, Argentina. The remains consist of associated and isolated axial skeletal elements recovered from three separate localities, and are herein assigned to the morphologically aberrant Rebbachisauridae clade. Several of the fossils exhibit osteological characters that were previously undocumented in rebbachisaurids, enhancing our understanding of the morphological diversity of this enigmatic sauropod group. In particular, the Bajo Barreal material demonstrates the occurrence within Rebbachisauridae of bifurcate neural spines in cervical vertebrae and well-developed, presumably pneumatic fossae in caudal vertebrae; among Diplodocoidea, these distinctive morphologies had previously been recognized only in flagellicaudatans. Furthermore, the Bajo Barreal fossils constitute the southernmost known occurrences of Diplodocoidea, adding to the globally sparse Late Cretaceous record of these sauropods and augmenting our knowledge of central Patagonian terrestrial vertebrate assemblages during this interval. 相似文献
13.
记述了四川盆地西南部晚侏罗世上沙溪庙组顶部的中国盗龙型肉食龙类化石材料,并依此建立一新属新种——犍为乐山龙 (Leshansaurus qianweiensis gen. et sp. nov.)。它以上枕骨中嵴呈尖峰状,额骨最大长度与最大宽度之比约2.86,基蝶骨之基翼骨突细长,环椎间椎体马蹄形,背椎横突相当细长,背椎和荐椎神经棘非常薄,荐椎椎体具有明显的腹嵴,肠骨内侧髋臼缘存在一明显的嵴等特征区别于其他肉食龙类。犍为乐山龙是目前所知四川盆地产出层位最高的肉食龙材料,它的发现扩大了肉食龙类的时代分布和地理分布,对探讨肉食龙的演化具有比较重要的意义。 相似文献
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首次在山西新荣地区晚白垩世助马堡组发现了巨型蜥脚类恐龙股骨化石。通过详细观测该股骨化石的保存状态、保存长度和股骨近端最大长度,估算该股骨化石实际长度约1.9 m,该蜥脚类恐龙体长可能超过30.0 m。在对化石层沉积相和古流向分析的基础上,分析了该股骨化石的埋藏环境。助马堡组为一套规模大、弯曲度高、水动力强的曲流河沉积,该蜥脚类恐龙死后在曲流河中经短—中距离搬运后被埋藏。新荣地区巨型蜥脚类恐龙股骨化石的发现,不仅扩大了晚白垩世巨型蜥脚类恐龙在中国北方地区的分布范围,同时对左云—新荣地区白垩纪古气候和古环境的研究具有重要意义。 相似文献
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记述了产自山东诸城上白垩统王氏群中一个较完整的蜥脚类恐龙肱骨(ZJZ-57)。它具有一些进步特征,如肱骨三角胸嵴向远端扩展,肱骨近端外侧1/3处发育隆凸,表明其属于较进步的巨龙类成员。另外,它具有一些独特的鉴定特征组合区别于其他任何巨龙类:近端横向强烈扩展,近端最大宽度与骨干长度之比为0.55;骨干粗壮,粗壮指数为0.39。综合研究表明,ZJZ-57所属个体代表了一种新的巨龙类恐龙:臧家庄诸城巨龙(Zhuchengtitan zangjiazhuangensis gen.et sp.nov.),它可能与Opisthocoelicaudia的亲缘关系较接近。这是山东晚白垩世地层中首次发现的巨龙类恐龙。 相似文献
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报道了首次在河南省汝阳县发现的大型蜥脚类恐龙股骨化石。从股骨近端的大小来判断，该股骨的实际长度可能超过2m，应属于巨型蜥脚类恐龙的股骨无疑。虽然化石破碎，种属的归属存在一定的困难，但是它的发现无论从晰脚类恐龙的分布、演化还是从地层学上都具有重要意义。该恐龙股骨化石的发现，将该地区原认为属于古近系蟒川组的时代向前推至早白垩世晚期或晚白垩世早期，同时其下伏地层陈宅沟组也应划归白垩纪时期的沉积。 相似文献
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We report two new three-dimensionally phosphatized microfossils, Cambrolongispina reticulata gen. et sp. nov. and Cambrolongispina glabra gen. et sp. nov., from the middle Cambrian （Series 3, Drumian Stage） at Wangcun, Yongshun County, western Hunan, South China. They are bivalved arthropods, with thin, pliable, originally chitinous or chitin-calcareous shields （c. 350-517 I1 m long）. The shields are equipped with a pair of antero-dorsal spines. The spines are internally hollow, varying in length from 1/2 of to as long as the shield length in C. reticulata, and uniformly longer than the shield length in C. glabra. The spines of C. reticulata are ornamented with a longitudinal row of conical or blade-shaped denticles along the posterior edge. Cambrolongispina lacks marginal rims, valve lobation and sulci which are diagnostic of the Bradoriida sensu stricto. It also lacks a donblure/duplicature characteristic of phosphatocopids and some bradoriids. It could be related to the Monasteriidae （which may belong to Bradoriida sensu lato）, both characterized by a pair of antero-dorsal spines. Cambrolongispina may have been meiofaunai detritus feeders that lived on or within sediments. The antero-dorsal spines may have been sensory organs to detect nearby predators. The posterior denticles on these spines might have facilitated the sensory function of the spines. 相似文献
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A new large theropod, Orkoraptor burkei nov. gen. et nov. sp., from the Upper Cretaceous (Maastrichtian) Pari Aike Formation of southern Patagonia is based on a postorbital, quadratojugal, coronoid?, several teeth, an atlantal intercentrum and neurapophysis, two caudal vertebrae, and the proximal half of tibia. This new theropod exhibits characteristics of maniraptorans (i.e., coelurosaurians more derived than tyrannosaurids) including an upturned rostral process of the postorbital, the caudoventral corner of which is widely concave. Furthermore, teeth without denticles and carina in the mesial margin resemble the condition of the maniraptoran clades Compsognathidae and Deinonychosauria. The new Patagonian theropod differs from other coelurosaurians (Ornithomimosauria, Compsognathidae, Alvarezsauridae, Dromaeosauridae, Aves) in having caudal vertebrae with a single pair of small pleurocoels on each side, and in having a median depression flanked by two longitudinal and narrow furrows on each tooth. Orkoraptor represents one of the southernmost carnivorous dinosaurs yet found in South America and adds valuable information about the diversification of tetanuran theropods in Gondwana. 相似文献
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Sclerorhynchiform sawfishes are a diverse and extinct clade of elasmobranchs that is restricted to the Cretaceous. Most taxa are known only by isolated rostral spines, whereas skeletal remains are rare and have been reported from a small number of Upper Cretaceous localities. Here, we describe skeletal remains of the giant sclerorhynchiform Onchosaurus pharao for the first time, which provides new morphological information. The single specimen comes from middle-basal upper Turonian strata of the Lessini Mountains in northeastern Italy and represents the first record of this genus from Italy. The specimen consists of unidentifiable cranial remains, several diagnostic rostral spines, the rostrum with fragments of tessellated calcified cartilage, and 87 disarticulated vertebrae. The rostrum preserves the characteristic sensory system of sclerorhynchiforms. It is devoid of any lateral sockets indicating that rostral spines were attached laterally to its surface. This pattern is identical to most sclerorhynchiforms and extant pristiophoriformes implying also similar replacement patterns as in most other sclerorhynchiforms with the exception for Schizorhiza. Additionally, the bases of two longitudinally arranged rows of ventral rostral spines are identifiable concurring with patterns seen in Sclerorhynchus. The axial skeleton is partly preserved. Re-arranging the disarticulated vertebrae according to their life position in combination with measures of the size and thickness of preserved vertebral centra, and the ratio rostrum length/body size depending on the number of vertebral centra indicate that the specimen was ca. 450 cm long. Growth rings in the vertebral centra show that the specimen was about four years old and thus probably not yet fully sexual mature when it died. This age assumption corresponds well with the calculated size when compared with complete skeletons of extinct sclerorhynchiforms and extant pristiforms. The size of the specimen and its occurrence in hemipelagic rocks corroborates previous assumptions that this sclerorhynchiform was a large and pelagic sawfish. 相似文献