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中国山东省诸城盆地张祝河湾村下白垩统杨家庄组发现了非鸟恐龙（蜥脚类和鸟脚类）与古鸟类足迹。该足迹点的非鸟恐龙足迹深受水浸沉积物的影响,发生了强烈变形。蜥脚类足迹的前后足迹面积相近,造迹者行进缓慢。鸟脚类足迹属于禽龙-鸭嘴龙类型的足迹。古鸟类足迹并不类似于中国以往发现的中生代鸟类足迹,而类似于韩国滨水鸟类足迹的金东鸟足迹（Jin-dongornipes）。讨论了莱阳足迹（Laiyangpus）和拟跷脚龙足迹（Paragrallator,亦译为拟似鹬龙足迹）,前者因模式标本遗失而不明确,后者可归入安琪龙足迹未定种（Anchisauripus isp）。这批足迹的发现大大增加了山东省东部恐龙的多样性。 相似文献
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山东诸城盆地下白垩统莱阳群的非鸟恐龙与鸟足迹化石组合 总被引：2，自引：1，他引：1
中国山东省诸城盆地张祝河湾村下白垩统杨家庄组发现了非鸟恐龙(蜥脚类和鸟脚类)与古鸟类足迹。该足迹点的非鸟恐龙足迹深受水浸沉积物的影响,发生了强烈变形。蜥脚类足迹的前后足迹面积相近,造迹者行进缓慢。鸟脚类足迹属于禽龙-鸭嘴龙类型的足迹。古鸟类足迹并不类似于中国以往发现的中生代鸟类足迹,而类似于韩国滨水鸟类足迹的金东鸟足迹(Jindongornipes)。讨论了莱阳足迹(Laiyangpus)和拟跷脚龙足迹(Paragrallator,亦译为拟似鹬龙足迹),前者因模式标本遗失而不明确,后者可归入安琪龙足迹未定种(Anchisauripus isp)。这批足迹的发现大大增加了山东省东部恐龙的多样性。 相似文献
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记述了辽宁省四合屯下白垩统义县组三个半恐龙足迹,归入似鹬龙足迹（亦译为跷脚龙足迹）一未定种（Grallator isp.）。这是义县组恐龙足迹化石的首次描述。该行迹至少由3个造迹者所造。从足迹推断恐龙体长1.51m,属于义县组兽脚类恐龙较为普遍的体长范围。重建了尾羽鸟(Caudipteryx)和中华龙鸟(Sinosauropteryx)的足部,前者的足迹轮廓与似鹬龙足迹未定种的吻合度超过后者。根据化石记录,似鹬龙足迹类型可能广泛存在于义县组的各种中小型兽脚类（驰龙类与伤齿龙类除外）中。 相似文献
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山东诸城黄龙沟恐龙足迹产于下白垩统中部莱阳群杨家庄组,其中以兽脚类为主,同时有蜥脚类和疑似鸟脚类足迹;兽脚类足迹又可进一步区分为大型兽脚类、似跷脚龙类(Paragrallator）和东方强壮百合龙类(Corpulentapus lilasia）。足迹共组成至少63条行迹,作者系统实测了其中50条,并据足迹大小指数—复步长和GAE(跷脚龙—安琪龙—实雷龙）图解给出了识别3类兽脚类足迹的经验性数值。足迹点沉积特征显示,浅湖相粉砂质泥岩和粉砂岩逐渐过渡为滨湖相砂岩。足迹层及其邻近层位波痕、泥裂发育,根据波脊线恢复的古岸线方向为东西向,波浪运动方向呈现出北至北西周期性变化,表明可能存在季节性风向变化。泥裂以及恐龙分布特征显示足迹点以S/WS为湖心方向,以N/EN为湖岸方向。似跷脚龙类和东方强壮百合龙类足迹分布区域的差异性表明东方强壮百合龙类生活区域更靠近湖岸。恐龙足迹中存在的明显叠盖现象表明足迹不是同时,而是多次活动遗迹。小型兽脚类行迹中较多近于平行的行迹体现了集群性生活习性。行进行为研究又显示兽脚类的绝大多数为快速奔跑状态,但蜥脚类等为慢行状态。兽脚类与蜥脚类、疑似鸟脚类足迹数量之比远大于正常捕食者和被捕食者之比也表明,早白垩世中期的胶莱盆地生存着以兽脚类为主、蜥脚类和鸟脚类为辅的恐龙动物群。早白垩世晚期,胶莱盆地以及沂沭断裂带内蜥脚类、鸟脚类恐龙以及鸟类逐渐繁盛,这与华北北部恐龙足迹所恢复的造迹恐龙动物群特征较为一致。中国北方、韩国、日本白垩纪恐龙足迹以及骨骼化石发育情况暗示,晚中生代中国北方以及东亚地区发育一个以恐龙等脊椎动物为主的大型陆地动物群。 相似文献
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安徽齐云山兽脚类足迹群是目前中国晚白垩世保存最好的恐龙足迹群之一,对其沉积环境的研究为恢复白垩纪末期恐龙动物群的生活环境提供了证据。研究区足迹全部为兽脚类凸型足迹,与无脊椎动物遗迹Palaeophycus tubularis和Scoyenia sp.保存在一起,指示陆相沉积中的浅水沉积。通过薄片鉴定,足迹层位主要为岩屑砂岩,其平均粒径、标准偏差、偏度和峰度4个粒度参数特征与典型的河相砂一致;粒级分布直方图、概率累积曲线图及散点图表明,足迹层位从下到上颗粒逐渐变细,水动力条件变弱,沉积环境由河床沉积转变为边滩沉积。综上,齐云山兽脚类足迹点沉积环境为大型曲流河沉积,足迹保存在边滩沉积的下部,是白垩纪末期干旱气候条件下兽脚类恐龙动物群的水源地。 相似文献
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内蒙古乌拉特中旗恐龙足迹研究 总被引：8，自引：1，他引：7
2006年内蒙古地质环境监测院在乌拉特中旗海流图镇西10公里处发现一恐龙足迹化石点。由于恐龙足迹产地的地层研究程度较低,因此这批恐龙足迹的研究在地层年代确定、以及恢复古环境方面具有重大意义。共识别出脊椎动物足迹化石119个,其中大部分为恐龙足迹,包括兽脚类恐龙足迹:玫瑰实雷龙足迹(Eubrontes glenrosensis)、海流图卡岩塔足迹(Kayentapus hailiutuensis ichnosp.nov)和鸟脚类恐龙足迹中型异样龙足迹种(Anomoepus intermedius),以及鳄类足迹的蛙步足迹,其中海流图卡岩塔足迹(Kayentapus hailiutuensisichnosp.nov)为新种。根据足迹形态的对比,推断造迹恐龙分别为兽脚类恐龙中的巨齿龙类(Megalosaurus)和双脊龙类(Dilophosaurus)以及鸟脚类恐龙棱齿龙类(Hypsilophodont)。通过对比发现乌拉特与波兰Opatw附近的Podole地区的早侏罗世的足迹组合十分相似,因此建议将乌拉特中旗海流图的足迹及含足迹地层的年代归入侏罗纪早期。根据对足迹产地附近的地层剖面的研究以及足迹组合中含大量鸟脚类恐龙足迹的事实推断:侏罗纪早期研究区古环境为山涧河流环境,雨量充沛。 相似文献
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记述了来自重庆綦江中白垩统夹关组恐龙足迹群，命名了甲龙亚目的中国綦江足迹（Qijiangpussinensis ichnogen．et ichnosp．nov．）、兽脚亚目的敏捷舞足迹（Wupusagilis ichnogen．etichnosp．nov．）和鸟脚亚目的炎热老瀛山足迹（Laoyingshanpus torridus ichnogen．etichnosp．nov．）和莲花卡利尔足迹（Caririchniumlotusichnosp．nov．）等新属种。中国綦江足迹是中国首次发现甲龙类的足迹。莲花卡利尔足迹提供了鸭嘴龙类在各发育阶段所留下不同的足迹。 相似文献
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记叙了中国陕西省商洛市邵涧村下白垩统东河群2个大型兽脚类恐龙足迹,并将其归于Megalosauripus isp.。
东河群的时代与热河生物群同期,邵涧Megalosauripus isp. 可能可与热河生物群的大型兽脚类恐龙之足部形态做简
单对比。此外,邵涧Megalosauripus isp.造迹者的体长约为7.4m,这意味着早白垩世的陕西中南部亦存在着大型的
兽脚类恐龙。邵涧Megalosauripus isp.的发现,不仅为中国早白垩世恐龙足迹增加了新的成员,而且为将来在该地
区下白垩统中发现大型兽脚类恐龙的骨骼化石提供了确凿的依据。 相似文献
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黑龙江嘉荫地区晚白垩世兽脚类恐龙牙齿的发现及其意义 总被引：1，自引：0，他引：1
黑龙江嘉荫地区是中国最早发现恐龙化石的产地,在我国晚白垩世恐龙的研究史上具有极其重要的意义。该地区曾发掘出土大量鸭嘴龙类化石,是研究大型鸟脚类恐龙尤其是鸭嘴龙类系统分类和演化的理想地区。但相对应于鸭嘴龙类化石来说,兽脚类恐龙化石在该地区的发现却较为鲜见,主要以牙齿的形式出现。本文主要对最近在该地发现的一批兽脚类恐龙的牙齿化石进行详细描述对比,初步研究显示含有霸王龙类、驰龙类、白鲨齿龙、福井盗龙以及可能为新的兽脚类恐龙的牙齿。 相似文献
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First record of dinosaur trackway from Tibet,China 总被引：2，自引：1，他引：1
Three sauropod trackways comprise eight tracks that resemble Brontopodus tracks have been found at the Morong track site in Changdu Prefecture, Tibet, China. These wide- (or sub-wide)-gauge tracks suggest that there was a large sauropod, possibly a member of Titanosauriformes, in Changdu Prefecture during the Early-Middle Jurassic. The sauropod fauna from Changdu Prefecture, Tibet not only has elements in common with the sauropod fauna from the Sichuan Basin, but may include more diverse faunal components. 相似文献
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Here we report a large dinosaur tracksite from an extensive fluvial sandstone surface in the Lower Cretaceous Jiaguan Formation of Sichuan Province, China. The site contains over 250 individual tracks comprising at least 18 recognizable trackways, including the longest theropod trackway (cf. Eubrontes) known from China. This exceptional theropod trackway consists of 81 successive footprints covering a distance of 69 m. The tracks are well-preserved and are expressed both as true tracks on the main “upper” surface and as transmitted undertracks on a locally exposed “lower” bed. Also recorded are six other theropod trackways, including small Grallator-like ichnites, eight sauropod trackways (cf. Brontopodus), and three small ornithopod (cf. Ornithopodichnus) trackways with a parallel orientation, which may indicate gregarious behavior. Several trackways of a larger theropod trackmaker show pes imprints with elongated traces of the metatarsals, suggesting extramorphological (substrate-controlled) variation and/or plantigrade posture, which is here interpreted as indicating a change in gait assumed in response to deep and soft sediment. The assemblage indicates a diverse dinosaur fauna in the Lower Cretaceous Sichuan Basin with variously sized theropods, sauropods, and ornithopods. The late occurrence of footprints of the Grallator-Eubrontes plexus in Lower Cretaceous strata is further evidence of the extended stratigraphic range of this morphotype and the distinct palaeobiogeographic distribution of these trackmakers in East Asia. 相似文献
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In Sung Paik Min Huh Kye Hun Park Koo Geun Hwang Kyung Sik Kim Hyun Joo Kim 《Journal of Asian Earth Sciences》2006,28(4-6):457-468
Eighty two dinosaur trackways were newly discovered in Upper Cretaceous lacustrine deposits on islands in the vicinity of Yeosu, Korea. Most dinosaur tracks occur in marginal lake deposits with polygonal desiccation cracks. The dinosaur tracks at the Yeosu site include 65 ornithopod trackways, 16 theropod trackways and one sauropod trackway. The prevalence of ornithopod tracks and the limited occurrence of sauropod tracks at the Yeosu site evidently reflect decreased sauropod diversity in the Upper Cretaceous. All ornithopod trackways represent bipeds, and most of the ornithopod tracks are similar to Caririchnium from other sites of the Korean peninsula. All fossil wood specimens collected in the study area represent conifers (three species of cupressaceous and two species of taxodiaceous conifers, and a new species) except for one, which is a discotyledon. It is thus inferred that the southwestern part of the Korean Peninsula was primarily covered with mesic forests with taxodiaceous trees during the Late Cretaceous. The K–Ar age of the Yeosu tracksite is determined as 81–65 Ma (Camapnian to Maastrichtian). It indicates that the Yeosu track site contains the last records of dinosaurs living in Asia. Consequently, semi-arid palaeoclimatic conditions, together with a large lake as a persistent water source and rich vegetation of gymnosperm trees as food, resulted in the preservation of abundant dinosaur tracks in the Upper Cretaceous on the Korean Peninsula. 相似文献
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An Important Ornithischian Tracksite in the Early Jurassic of the Shenmu Region,Shaanxi, China 总被引：1，自引：0，他引：1
LI Jianjun Martin G. LOCKLEY ZHANG Yuguang HU Songmei MATSUKAWA Masaki BAI Zhiqiang 《《地质学报》英文版》2012,86(1):1-10
A large track site with multiple,well-preserved trackways of an Early Jurassic quadrupedal ornithischian dinosaur is the first report of Moyenisauripus-like trackways from Asia,herein named Shenmuichnu... 相似文献
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A previously unknown and morphologically distinct pentadactyl mammal track was recovered from the Upper Cretaceous (Maastrichtian) Laramie Formation at the Fossil Trace site, a National Natural Landmark which is the type locality for Schadipes crypticus, the only named mammal track known from North America. The track is different, and larger than S. crypticus, and thus is evidence of a diversity of mammal trackmakers at this site. Although Cretaceous mammal tracks are very rare, preliminary indications are that those currently known are all morphologically distinct and therefore indicative of a global diversity of different trackmakers, as the body fossil record suggests. Lack of well-preserved mammal trackways with morphologically distinct manus and pes footprints hampers efforts to name diagnostic ichnotaxa. 相似文献
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贵州省拥有丰富的中生代脊椎动物化石记录,多为三叠纪海生爬行类化石,侏罗纪和白垩纪的脊椎动物化石较少。目前,贵州省已发现中生代爬行类足迹点9处,分别为贞丰牛场、贞丰龙场、安顺幺铺、赫章辅处、毕节响水(2处)、仁怀茅台、赤水宝源和习水同民足迹点。文中除描述了贞丰龙场新增的一批足迹化石外,整理并总结了所有足迹点的发现史、研究现状、足迹类型与特征以及所反映的古生态信息。已发现的遗迹记录由69条行迹和420个孤立足迹组成,足迹总数达991个。所有的遗迹化石指示了至少477个造迹者,包括海生爬行类、手兽足迹类、非鸟兽脚类、鸟类、蜥脚类和鸟臀类等,其中三叠纪以海生爬行类主导,侏罗纪和白垩纪以蜥臀类主导。这个数据集为贵州中生代古生物类群的多样性提供了重要的信息,是晚中生代稀缺骨骼化石记录的良好补充,为研究贵州省中生代脊椎动物群的古生态与古环境提供了更多的证据。 相似文献
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Lida Xing Martin G.Lockley Yongzhong Tang Hendrik Klein W.Scott Persons IV Miaoyan Wang Xingwen Li Hao Wu 《地学前缘(英文版)》2021,12(2):737-745
Poorly preserved tracks have limited ichnotaxonomic or biotaxon utility,but may reveal useful information about the paleoenvironment,behavior and track taphonomy.Eight mostly parallel to sub parallel trackway segments(T1–T8)were registered on a truncation surface in the Lower Cretaceous Luohe Formation of Shaanxi Province.These attest to the passage of several bipeds,probably all theropods,in a paleo-contour-parallel,south-north direction in an arid setting.Quality of preservation in these trackways is poor,but notably superior in two additional trackways(T9–T10)on a foreset surface.Trackway T9 indicates a didactyl trackmaker,probably a deinonychosaurian,heading north to south.This is the 13th report of deinonychosaurian tracks from the Lower Cretaceous of China.If any or all the eight south-north oriented trackway segments represent continuations of other segments in the same trackways,the total number of individual trackmakers heading in this direction may have been as lowas three.Although the trackway pattern and sedimentological evidence could indicate a physically controlled pathway influencing the direction taken by these trackmakers,the possibility that the trackways also represented small social or gregarious group cannot be ruled out. 相似文献
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基于恐龙足迹重建攀西地区白垩纪恐龙动物群 总被引：2，自引：2，他引：0
攀西地区没有白垩纪恐龙骨骼化石记录,对该区白垩纪恐龙动物群组合的认识尚属空白。1991年,攀西地区首次发现了恐龙足迹,此后陆续发现了8个足迹点。这些足迹点共发现9种不同的非鸟恐龙足迹(6种非鸟兽脚类、1种蜥脚类和2种鸟脚类足迹),以及翼龙和龟类足迹。共11种足迹形态类型由185道行迹(与孤立足迹)组成,可能代表着同等数量的造迹者。其中飞天山组的组合多样性最强,小坝组和雷打树组较弱。这个相对全面的足迹数据库,为该地区白垩纪四足类的古生态学普查提供了动物群的组成信息,这在该缺乏骨骼化石的地区显得尤为重要。 相似文献