华夏龙谱(67)——侯氏红山龙(Hongshanosaurus houi You,Xu et Wang,2003)

<正>2003年,中国科学院古脊椎动物与古人类研究所学者尤海鲁、徐星和汪筱林,发表了对产自内蒙古赤峰市附近下白垩统义县组地层的一种新恐龙属种化石的描述。因发现地点位于著名的中国北方新石器时代晚期红山文化分布区,故以此命名属名,种名则以同一研究所学者及化石保管者侯连海命名:侯氏红山龙(Hongshanosaurus houi)。特征:小型素食恐龙。两足行走,上、下颌前端有骨质喙,脸颊两侧有咀嚼用齿列。头骨与鹦鹉嘴龙很像,主要区别是:红山龙的头颅骨比鹦鹉嘴龙低平,眼框椭圆形而非鹦鹉嘴龙的圆形。     

华夏龙谱(32)--董氏中国翼龙(Sinopterus dongi Wang et Zhou,2003)

2003年中科院古脊椎动物和古人类研究所专家汪筱林和周忠和先生研究了辽宁西部热河群上部九佛堂组近两年来发现的大量翼手龙化石中一件几乎完整的化石骨架，认为是一种古神翼龙科翼龙，命名为董氏中国翼龙(Sinopterus dongi)，“董氏”种名献给中国著名恐龙学家董枝明研究员。此前古神翼龙科仅在南美大陆巴西有过报道，中国翼龙是迄今古神翼龙科保存最完整和层位最低的记录。     

总结经验,努力开拓,大力推进我国工程项目管理和工程总承包事业的发展(节选)

正当全国欢庆党的十六大召开之际,中国勘察设计协会和中国工程咨询协会在此联合召开建设项目管理和工程总承包经验交流暨表彰大会,总结20年来我国开展工程项目管理和工程总承包工作的成绩,表彰优秀项目。现在我受中国勘察设计协会建设项目管理和工程总承包工作委员会和中国工程咨询协会项目管理指导工作委员会的委托,将1999年至今三年来工作委员会所做的工作向大家作一汇报。     

Late Cretaceous (Santonian) Atractosteus (Actinopterygii,Lepisosteidae) remains from Hungary (Iharkút,Bakony Mountains)

Lepisosteid fishes are well known from the Upper Cretaceous of Europe, but only by fragmentary remains from some Cenomanian and Campanian–Maastrichtian deposits. Here we report various cranial and postcranial remains of gars, discovered in the Upper Cretaceous (Santonian) Csehbánya Formation of Iharkút (Bakony Mountains, Hungary). These remains represent one of the most diverse assemblages of lepisosteid fish material from Upper Cretaceous continental deposits of Europe. Based on tooth morphology, scale-microstructure and the features of the supracleithrum we refer these remains to the genus Atractosteus. Besides some uncertain remains from the Cenomanian of France and Spain, the Santonian aged fossils from Iharkút represent the oldest undisputable occurrence of the family Lepisosteidae in the European continental Cretaceous. Using tooth crown morphology, the surface microstructure of the ganoid scales and the anatomy of the supracleithrum a review of the Late Cretaceous lepisosteid record suggests the occurrence of both Atractosteus and Lepisosteus in the European archipelago.     

华夏龙谱(30)--燕子沟辽宁角龙(Liaoceratops yanzigouensis Xu,Makovicky,Wang,Norell,You,2002)

20 0 2年6月～7月间,十几位中外古生物学者在辽宁省北票市上园镇燕子沟附近中生界义县组底部地层中,发掘出了两具恐龙头骨化石。经研究确定,属于一种新发现的原始角龙类恐龙。研究者为中国科学院古脊椎动物和古人类研究所的徐星、汪筱林、尤海鲁、美国原野博物馆的PeterJ .Makovicky和美国自然历史博物馆的MarkA .Norell ,将这种新发现的小型恐龙命名为“燕子沟辽宁角龙”。角龙类恐龙是恐龙演化历程中最后的和最多样化的代表之一,以植物为食,通常分为两大类:长有颈盾的新角龙类和具有与鹦鹉相似喙部的鹦鹉嘴龙类,它们之间的系统演化关系…     

Two New Fossil Sawflies (Hymenoptera, Xyelidae, Xyelinae) from the Middle Jurassic of China

Two new genera with two new species of sawflies, Cathayxyela extensa gen. et sp. nov. and Aequixyela immensa gen. et sp. nov., from the Middle Jurassic Jiulongshan Formation of southeastern Inner Mongolia, China, are assigned to the subfamily Xyelinae （Hymenoptera, Xyelidae）. Cathayxyela gen. nov. can be distinguished by the third antennal article longer than the head; mesoprescutum and mesoscutellum nearly equal in length; the forewing with Sc meeting C before the junction of 1-M and 1- Rs; a weak and narrow pterostigma; and 3-Cu at least 1.5 times longer than the lm-cu. Aequixyela gen. nov. is characterized by the third antennal article nearly as long as the head; the forewing with Rs＋M approximately equal to 2-Rs in length; 2m-cu inclined toward the wing base and nearly reaching the middle of cell 3rm; lm-cu as long as the 2-Cu and 3-Cu; and the cell 2cua of regular hexagonal shape.     

中国第四纪孢粉数据库(CPD)和生物群区(Biome 6000)

介绍了中国第四纪花粉数据库的建立、组织及数据收集、大型成果共享等原则及章程,并着重介绍了当前由ＩＧＢＰ所支持的用孢子花粉资料重建６ｋａＢＰ及１８ｋａＢＰ生物群区（植被）的全球合作项目。到目前为止,利用中国第四纪花粉数据的原始数据及生物群区化方法已经完成中国现代表土花粉、６ｋａＢＰ（中全新世）及１８ｋａＢＰ（２０ｋａＢＰ）（末次盛冰期）的生物群区模拟及重建,在文中展示了制图结果,并讨论了当时植被与现     

Amino-acid composition of algal (“stromatolitic”) limestones (Gannat,Massif-Central,France)

The amino-acid compositions of limestones whose origin is thought to be related to the activity of Cyanophyceae have been studied to determine whether the characteristic components of these organisms would be present as geochemical fossils. A significant amount of amino acids is present and the content can be divided between a “free amino-acid fraction” and a “combined amino-acid fraction” containing different amounts of acidic and basic amino acids. There is evidence to suggest that the amino acids and amino sugars isolated are indeed contemporaneous with the formation of the sediments. The absence of diaminopimelic acid and the very small amount of muramic acid present shows that these two important components of algal and bacterial cell-membranes have apparently been extensively degraded.     

中国热河生物群眼甲科昆虫化石(鞘翅目,原鞘亚目,眼甲科)

本文描述眼甲科化石1新属1新种和波纹眼甲属Amblomma中5新种:瘤点宽眼甲Euryommatylodesgen.et sp.nov.,圆齿波纹眼甲Amblommacyclodontasp.nov.,稍小波纹眼甲Amblommaminisculasp.nov.,前伸波纹眼甲Amblommaporrectasp.nov.,美脉波纹眼甲Amblomma eumeurasp.nov.,和延展波纹眼甲Amblommaprotensasp.nov.,并给出波纹眼甲属内种间检索表。前缘边显著加宽,这一特征表明宽眼甲属很可能是眼甲科中一个比较原始的类群。义县组沉积形成时频繁的火山活动产生的环境变化可能是造成同一化石产地发现Amblomma属内多个不同种的重要原因。中国热河生…     

A New Protoceratopsid (Dinosauria: Neoceratopsia) from the Late Cretaceous of Inner Mongolia, China

An almost complete skull, which was collected from the Upper Cretaceous of the Bayan Mandahu area in Inner Mongolia, China by the Sino-Canadian Dinosaur Project, is described and assigned to a new genus of protoceratopsid dinosaur, Magnirostris dodsoni gen. et sp. nov. This new taxon is distinguished from other protoceratopsids by the robust rostral bone and the existence of incipient orbital horn cores. The existence of an additional antorbital fenestra indicates a close relationship between Magnirostris and Bagaceratops.     

Pygostyle-like Structure from Beipiaosaurus (Theropoda, Therizinosauroidea) from the Lower Cretaceous Yixian Formation of Liaoning, China

Pygostyle was previously considered as a unique structure of ornithothoracine birds, used to maneuver tail feathers. A similar structure from an oviraptorosaurian dinosaur was considered functionally associated with the rectrices as in birds. We report a pygostyle-like structure from a therizinosauroid dinosaur. The presence of filamentous integuments, but absence of rectrices, on the tail of this therizinosauroid, combined with other lines of evidence, suggests that the initial function of the pygostyle was not related to the rectrices.     

《中国地质》(双月刊)稿约

《中国地质》(双月刊)是由国土资源部主管、中国地质调查局主办的综合性学术期刊,是在原《中国区域地质》内容基础上的延伸和拓展,是反映中国地质调查和研究成果的重要载体。     

《中国地质》(双月刊)稿约

《中国地质》(双月刊)是由国土资源部主管、中国地质调查局主办的综合性学术期刊,是在原《中国区域地质》内容基础上的延伸和拓展,是反映中国地质调查和研究成果的重要载体。     

《中国地质》(双月刊)稿约

《中国地质》(双月刊)是由国土资源部主管,中国地质调查局主办的综合性学术期刊,是在原《中国区域地质》内容基础上的延伸和拓展,是反映中国地质调查和研究成果的重要载体。《中国地质》(双月刊)的办刊宗旨是:以基础性、公益性、学术性为特色,坚持"百花齐放,百家争鸣"的方针,展示国家层次、高水平的学术科研成果,着重反映地质大调查和科研中具有创新性、前沿性、综合性、导向性的研究成果,推出一大批地学科研人才。《中国地质》(双月刊)主要报道基础地质(包括地层、古生物、构     

Photoluminescence of zircon (ZrSiO4) doped with REE3+ (REE = Pr, Sm, Eu, Gd, Dy, Ho, Er)

The photoluminescence properties of synthetic zircon, ZrSiO₄, doped with REE³⁺ (REE = Pr, Sm, Eu, Gd, Dy, Ho, Er) were investigated using combined excitation and emission spectroscopy. All samples showed luminescence characteristics of intra-ion energy transitions, similar to other lanthanide-doped materials. However, the relative intensities were dependent on the energy of excitation and the presence of charge-transfer bands were inferred from excitation spectra. From the data, we conclude that the lanthanides in zircon occur in more than one type of coordination. Energy transfer between different lanthanides was observed in some co-doped samples and emissions that were unassigned in previous studies have been assigned to specific lanthanides based on excitation spectroscopy.     

华夏龙谱(60)——始丰天台龙(Tiantaiosaurus sifengensis Dong,et al,2007)

2005年,浙江省天台县街头镇方山村附近白垩系赖家组上部地层发掘出一具恐龙骨架化石,包括12个颈椎,9个背椎,28个尾椎,13条背肋及残缺的骨盆和后肢。虽缺失头骨、荐椎、前肢和脚,但仍是迄今为止浙江发现的最完整的恐龙骨架化石。2007年,中国科学院董枝明和其他有关部门专家     

中国水文发展历程概述(Ⅰ)

根据几十年来水文工作的经历以及相关资料,就历史阶段、建设阶段和发展阶段的中国水文发展历程进行概述。重点介绍了改革开发以来在水文站网建设、水文测报、水情报汛、水质监测、科技创新等方面取得的成就,回顾了在水文事业发展过程中的一些重大历史事件,并总结了历史的经验和教训。