New radiolarians from the Devonian of the southern Ural Mountains: 1. Early-Middle Devonian (Late Emsian-Early Eifelian)

Late Emsian-Early Eifelian radiolarians from the southern Ural Mountains are recorded and described for the first time. They come from the Kamennaya Gora section on the Tanalyk River near the town of Buribay, Bashkiria. The new Late Emsian-Early Eifelian radiolarian assemblage consists of 20 species of 11 genera of spherical, discoidal, spindle-shaped, pylomate, and spiny radiolarians. Four new species, i.e., Entactinia rostriformis sp. nov., Palaeodiscaleksus tumefactus sp. nov., Primaritripus buribayensis sp. nov., and P. chuvashovi sp. nov., are described. The diagnosis of the genus Primaritripus Afanasieva, 2000 is amended. The fact that the oryctocenosis is dominated by discoidal radiolarians suggests that, in the Late Emsian-Early Eifelian, the area under study was occupied by a relatively shallow marine basin. Based on radiolarians, a new Upper Emsian-Lower Eifelian biostraton, beds with Primaritripus buribayensis-Entactinia rostriformis, is established. The history of the study of Early Devonian radiolarians is considered.     

Carpozoan echinoderms from the Middle Cambrian (Mayaktakh Formation) of Siberia (lower reaches of the Lena River)

Two new monotypic genera and a new monotypic family Rozanovicystidae of the class Cincta are described from the Middle Cambrian (Mayaktakh Formation) of the northeastern part of the Siberian Platform. Based on data obtained by morphofunctional analysis, there is a possibility that these animals could move by jet propulsion by ejecting water from the opercular aperture. Probable homologies of the main skeletal parts are discussed.     

辽东苏子河盆地聂尔库组的真骨鱼化石兼论长头狼鳍鱼的系统位置

本文记述了辽东聂尔库组所产的骨舌鱼超目二新属——聂尔库鱼(Nieerkunia gen. nov.)、苏子鱼(Suziichthys gen. nov.)和狼鳍鱼科(Lycopteridae)属种未定的材料.文中将长头狼鳍鱼(Lycoptera longicephalus)订正为狼鳍鱼科—新属——辽西鱼(Liaoxiichthys gen. nov.),并认为聂尔库组的鱼群不同于九佛堂组的鱼群,时代属早白垩世.     

河北和辽宁晚侏罗世古蝉化石(同翅目:头喙亚目)(英文)

本文描述古蝉科化石2新属、6新种,即Liaocossushuegen.etsp.nov.,L.beipiaoensisgen.etsp．nov,L．exiguusgen．etsp．nov,L．fengningensisgen．etsp．nov,L．Pingquanensisgen.etsp.nov.,Miracossusingentiusgen．etsp．nov.。这批化石保存有完整的虫体标本,使作者能够进一步研究古蝉类化石的虫体特征。化石采于冀北和辽西晚侏罗世义县组地层中,保存在中国地质博物馆。     

New radiolarian species from the Upper Cretaceous-Lower Paleogene of the eastern slope of the northern Ural Mountains

Five new radiolarian species, Dictyophimus? orbiculiporosus sp. nov., Spongomelissa imperceptusa sp. nov., Theocoronium puncticulatum sp. nov., Pterocyrtidium porrectum sp. nov., and Tripodiscinus corona sp. nov., from the Campanian-Danian diatomites of the Leplinskaya Formation of the northern Ural Mountains are described. They are useful for stratification and correlation of the Upper Cretaceous and Lower Paleogene beds of the Ural Region of Western Siberia.     

Paramesopsocidae,a new Mesozoic psocid family (Insecta: Psocodea “Psocoptera”: Psocomorpha)

Paramesopsocus lu n. gen., n. sp. and Paramesopsocus adibi n. sp. are respectively described from the Early Cretaceous amber of Lebanon and from the Late Jurassic limestone of Karatau (Kazakhstan). They are placed within the suborder Psocomorpha, and in the Mesozoic extinct family Paramesopsocidae n. fam. A cladistic phylogeny for Psocomorpha is given including our fossil taxa. The discovery of these new taxa demonstrates the necessity of a deep cladistic redefinition of the currently admitted major subdivisions of this suborder.     

云南墨江晚三叠世 Burmesia 一新种

描述了中国山东莱阳晚侏罗世的蠼螋化石３新种２新属,分别隶属于２亚目１新科和１现生科。这些标本是中国已知的最古老的蠼螋化石,具有许多原始特征,在昆虫纲革翅目的系统发生中具有重要的意义。     

A new late Cretaceous azhdarchid (Pterosauria,Azhdarchidae) from the Volga Region

A new azhdarchid genus and species, Volgadraco bogolubovi gen. et sp. nov., is described based on an anterior fragment of the mandibular symphysis (mandibular beak) and some postcranial elements from the Rybushka Formation (Upper Cretaceous, Lower Campanian) of the Shirokii Karamysh 2 locality, Saratov Region. The new taxon is intermediate in size and vascularization of the mandibular beak between medium-sized Turonian-Santonian azhdarchids (Azhdarcho, Bakonydraco) and the giant Maastrichtian azhdarchid Quetzalcoatlus.     

A New European Marsupial Indicates a Late Cretaceous High-Latitude Transatlantic Dispersal Route

The first record of an undoubted opossum-like marsupial from the Mesozoic of Europe indicates an invasion from North America at the end of Late Cretaceous (Maastrichtian). The new 66.1 million-year-old marsupial, Maastrichtidelphys meurismeti n. gen., n. sp., represented by a right upper molar, comes from the type Maastrichtian of The Netherlands. The Maastricht marsupial exhibits affinities with earlier (early Maastrichtian) North American herpetotheriids providing definitive evidence of a high-latitude North Atlantic dispersal route between North America and Europe during the latest Cretaceous. Previously, the first major interchange for marsupials was thought to have occurred nearly 10 million years later in the Eocene. The occurrence of this new marsupial in Europe implies that at some time during the latest Cretaceous, sea level and climatic conditions must have been sufficiently favorable to allow for such a high-latitude dispersal. The fragmentary remains of hadrosaurid and theropod dinosaurs, as well as boid snakes from northwestern Europe which have affinities with North American taxa help substantiate assumptions made by the occurrence of the herpetotheriid marsupial in Maastricht.     

AN EARLY FOSSIL STURGEON (ACIPENSERIFORMES, PEIPIAOSTEIDAE) FROM FENGNING OF HEBEI, CHINA

orderAeipen8eriformesBerg,l94oFamilyPeipiaosteidaeLiuetZhou,l965GenusYQnosteusgen.nov.GeneriediagnosisAcipenseriformwithextremelyelongateddorsalfin(lengthofitsbaseaboutl/3oftotalbody1engtli).Thetaxon'differingfromothergeneraofPeipiaosteidaeinpossessingossifiedpalatine;splint-likequadratojugal;supraorbi-tal,infra0rbitalandp0storbitalsensorycanalsc0nnectedindermosphen0id;vertebralarcuales,supraneurals,pleuralribsandpterygioph0reswell-ossified;ganoinepresentonfin'rays;nocaudalfinraysdorsalt0n…     

辽宁义县组原蝎蛉科(昆虫纲,长翅目)化石一新种

描述原蝎蛉科化石1新种,优秀云状原蝎蛉Typhothauma excelsa sp.nov.。对新种与模式种做了比较。化石标本采自辽宁省北票市炒米甸村晚侏罗世/早白垩世义县组地层,模式标本保存于首都师范大学生命科学学院。     

辽宁晚侏罗世～早白垩世一长颈双弓类爬行动物(英文)

初步记述了采自辽西凌源地区晚侏罗世～早白垩世义县组一新的双弓类水生爬行动物化石材料,并确立其为、新属新种──凌源潜龙（Ｈｙｐｈａｌｏｓａｕｒｕｓ　ｌｉｎｇｙｕａｎｅｎｓｉｓｇｅｎ．ｅｔ ｓｐ．ｎｏｖ．）。化石产于凌源大王杖子乡范杖子村义县组合火山灰的灰白色湖相页岩中,与狼鳍鱼（Ｌｙｃｏｐｔｅｒａ）共生。 凌源潜龙的正模是一具几乎完整、保存完好的化石骨架,包括近乎完整的头骨、下颌骨和头后骨骼,仅尾椎有少量丢失,标本上主要显露腹面骨骼（中国科学院古脊椎动物与古人类研究所标本编号Ｖ１１７０５）。其与水生爬行类Ｃｈｏｒｉｓｔｏｄｅｒｅｓ共有特征包括平凹型脊椎,３个荐椎,背肋肿大,肢骨下节远短于上节,腕骨和跗骨弱骨化。凌源潜龙主要鉴别特征为：相对身体比例,头骨较小;颈部大大加长,颈椎１９个;显著肿大的背肋呈Ｓ型;超过２０组腹肋,每组由３段组成,而对应每一椎体有２～３组腹肋;第Ⅲ、Ⅳ　骨长度基本相等,第Ｖ　骨不为钩状。 凌源潜龙所具有的异乎寻常的长颈与三叠纪海相幻龙类（Ｎｏｔｈｏｓａｕｒｓ）有相似的特征。其所具有的相对小的头骨,尖的吻部,似针状的牙,特殊的长颈及其埋藏特征反映该动物为适应湖泊环境的食鱼性动物。 凌源潜龙是迄?     

New jewel beetles (Coleoptera: Buprestidae) from the Cretaceous of Russia,Kazakhstan, and Mongolia

A new jewel beetle genus, with one species (Cretofrontolina kzyldzharica gen. et sp. nov.) from the Upper Cretaceous of Kazakhstan is described based on a body; and three new species of the formal genus Metabuprestium are described based on isolated elytra: Metabuprestium sibiricum sp. nov. and M. arkagalense sp. nov. come from the Arkagala locality (Upper Cretaceous of Russia) and M. ichbogdense sp. nov. is from the Shar Tologoi locality (Lower Cretaceous of Mongolia).     

The biostratigraphic and palaeoenvironmental significance of Lower Cambrian (Botomian) trilobites from the Ak-Kaya section of the Altai Mountains (southern Siberia,Russia)

The presence of one of the oldest records of polycystine Radiolaria in the Lower Cambrian sedimentary sequence of the Ak-Kaya section (Gorny Altai) requires a biostratigraphic dating. The trilobites found recently a few tens of meters below the radiolarian-bearing level belong to Calodiscus resimus Repina, Serrodiscus fossuliferus Repina and Alacephalus aff. contortus Repina; they suggest that this part of the Shashkunar Formation can be correlated with the lower part of the Botomian stage. The absence of eyes in the two former species suggests a mode of life buried in the fine pelagic sediments. Indications of the presence of a strongly developed musculature on the third species point to a palaeoenvironment characterized by a relatively high hydrodynamic regime.     

A REVIEW OF MESOZOIC OSTEOGLOSSOMORPH FISH LYCOPTERA LONGICEPHALUS

icephalusLiuetal.l963isemendedt0Jinanichthyslongiccphalus(Liuetal.)-Li-aoxiichthysSul992isconsideredasasyn0nymofJinanichthys-Theev01utionarytrendandsystematicpositionofJinanichthysarediscussed.l.Revi8ionofthecharactersofJinarrichthysBodyfusiform;ratioofbodyheighttobodylengthvariable;nasalsslenderandsmall;frontals10flg;parietalsrelativelylarge;supra0ccipita1relativelyroundandnotseparateparieta1s;supraorbitalsens0rycanalceasinginthemiddlepartoftheparie-talandnotlinkingwithsub0rbitalsens0rycan…     

New species of the family Heliodiscidae Haeckel (radiolaria)

The family Heliodiscidae Haeckel, 1881, which includes five genera, is reviewed. New methods of investigation are applied to the inner structure of Cretaceous spherical radiolarian skeletons, which reveal numerous taxa with an eccentric microsphere. Three new species, Astrophacus marinae sp. nov., Excentrosphaerella kovalenkovi sp. nov., and Excentrosphaerella kurilovi sp. nov., are described. The eccentric position of the microsphere suggests that these forms are nontypical Mesozoic radiolarians or new representatives of the family Heliodiscidae Haeckel, 1881, which was previously recorded in the Cenozoic.