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The results of studying the Jurassic microfauna of the eastern shore of Anabar Bay are presented. Bajocian-Oxfordian microbenthic communities were reconstructed, characterizing two stages of foraminiferal development. The bionomic zones of the Anabar-Lena Sea in the area of the studied section are recognized. [ABSTRACT FROM AUTHOR]

A dorsal vertebra of an ichthyosaur is described from the fluvial deposits of the Kama River (Votkinsk District, Udmurt Republic, Russia). This vertebra belonged to a fairly large ichthyosaur about 5–6 m long, apparently one of the largest ichthyosaurs known from European Russia. The find is redeposited, and it is problematic to establish its exact age: most likely, the vertebra was brought by the Kama River from Jurassic–Cretaceous outcrops located upstream. [ABSTRACT FROM AUTHOR]

New caddisflies of the families Necrotauliidae and Philopotamidae are described from the Jurassic of Asia. Karataulius martae sp. nov., Archiphilopotamus expectatus sp. nov. and Juraphilopotamus inopinatus sp. nov. are described from the Upper Jurassic (Karabastau Formation) locality of Karatau in South Kazakhstan, and Necrotaulius communis sp. nov. and Juraphilopotamus similis sp. nov. are described from the Middle Jurassic (Itat Formation) locality of Kubekovo, Krasnoyarsk Region. Keys for species of the genera Archiphilopotamus Sukatsheva, 1985 and Juraphilopotamus Wang, Zhao et Ren, 2009 are proposed. The stratigraphic and geographical distribution of the Mesozoic representatives of the Philopotamidae are discussed. [ABSTRACT FROM AUTHOR]

The systematic position and status of the genus Bathropyramis Haeckel, 1882, restituo et emend. Amon et Vishnevskaya, nov. (Radiolaria, order Nassellaria, family Plectopyramididae) are considered, evaluated and revised. The diagnosis of the reinstated genus Bathropyramis is clarified. The earliest species of the genus, Bathropyramis filatovae Vishnevskaya, 2001, emend. Amon et Vishnevskaya, nov., from the Callovian of the Koryak Highlands, as well as of B. sanjoaquinensis Campbell et Clark, 1944, emend. Amon et Vishnevskaya, nov. from the Upper Maastrichtian of the Koryak–Kamchatka Region, and Cinclopyramis victori (Lipman, 1960), emend. Amon et Vishnevskaya, nov., from the Eocene of Kamchatka are re-described. [ABSTRACT FROM AUTHOR]

A new species of fossil pines, P. bukatkinii sp. nov., was found in the Middle Jurassic of Stoilensk open mine (the vicinity of Stary Oskol town, Belgorod Region). Seed cones of the new species possess four key diagnostic characters of representatives of the genus Pinus L.: thickened scale apices with apophyses and umbo; trace to the seed scale and bract represents a single unit; resin canals enter the seed scale base abaxially; adaxially convex vascular bundles in the seed scale. The distinctive feature of the new species is a strong sclerification of the seed scale ground tissue. Galleries, made by herbivores, were found in seed cones of P. bukatkinii sp. nov., that represents the oldest documented evidence of parasitism on pinaceous seed cones. [ABSTRACT FROM AUTHOR]

Many ichthyosaur researchers consider the Late Jurassic genera Grendelius and Brachypterygius synonymous, but do not take into account species of the genus Otschevia (synonym of Grendelius) described from Russia, which is partly due to their brief initial descriptions. We provide a detailed description and photographs of the bones of Grendelius pseudoscythicus and Grendelius zhuravlevi holotypes and compare them with the other species of the genus; several new specimens belonging to the genus Grendelius from European Russia are also described.Grendelius pseudoscythicus and G. zhuravlevi differ from each other and from the other species of the genus in the morphology of some cranial bones (quadrate and stapes), pectoral girdle, and forelimbs, and they should be considered as valid species. Therefore, at least three species of the genus Grendelius were present in the Middle Russian Sea in the Middle Volgian. Some of the new specimens described in this paper differ from the known species, which suggests the presence of other species of the genus Grendelius in European Russia. Based on the available data, there is still insufficient evidence for synonymy between the genera Brachypterygius and Grendelius. [ABSTRACT FROM AUTHOR]

The dispersed palynomorph Pseudoschizaea sp. of unknown affinity from the Jurassic of Italy was studied under transmitted light, confocal, fluorescent, scanning, and transmission electron microscopy. A comparison with spores of mosses and fungi, algal cysts and resting eggs of worms has been conducted. Similar sculpture pattern and size range are observed in some algae and fungi. A cross striation of the wall, discovered for this taxon, is so far unknown among algae and fungi studied with a transmission electron microscope, but channels similar to those of Pseudoschizaea are observed in some particular wall layers of some algae. The possible relationships and ecology of the producers of such palynomorphs are discussed. [ABSTRACT FROM AUTHOR]

Data on the evolutionary and biogeographical differentiation features of the Volgian ammonites of the family Craspeditidae are summarized, an updated scheme of the Panboreal correlation of the terminal part of the Middle Volgian and Upper Volgian is proposed. The new Lambecki and Surlyki zones, as well as the surlyki, margaritae and discoides biohorizons are recognized. The diagnoses of the genera and subgenera of Volgian craspeditids are emended. All subfamilies of this family that existed at the end of the Middle Volgian and Late Volgian are characterized by a weakened ornamentation and a general tendency towards decrease in the size of the shells over time. Subcraspeditins and garniericeratins are characterized by a gradual decrease in the relative width of the whorls and umbilicus over time, while craspeditins in most lineages show a clear tendency to increase the relative thickness of the whorls. The taxa that inhabited the Middle Russian Sea show a direct correlation between the relative abundance of representatives of different subfamilies and the rate of their evolution, but in other regions this pattern is not observed. Volgian craspeditids are characterized by a high degree of endemism. Despite a constant exchange of faunas between the main evolutionary centers, only at the very end of the Late Volgian did the ammonite associations of most of the studied regions profoundly change due to massive introduction of immigrant taxa. [ABSTRACT FROM AUTHOR]

Xenoxylon fossil wood species (X. latiporosum, X. phyllocladoides, X. japonicum, X. meisteri, and X. nariwaense) from the Cretaceous localities of Siberia and the Russian Far East are described based on anatomical wood features. X. japonicum and X. nariwaense have not been recorded in Russia, and X. meisteri has not been recorded in the Russian Far East. The knowledge about the stratigraphic distribution of X. japonicum and X. nariwaense, which were earlier described only from the Upper Triassic deposits, is improved. A complete list of revised Xenoxylon fossil woods from the Jurassic and Cretaceous deposits of Siberia and the Russian Far East is provided. [ABSTRACT FROM AUTHOR]

Abstract: The following most significant features of the colonial organization of the Jurassic and Cretaceous stenolaemate bryozoans are considered: life forms, autozooids, heterozooids, and trophic structuring of colonies. These and other features and their variations and all possible combinations form the basis of the morphological diversity of these bryozoans. [ABSTRACT FROM AUTHOR]

Abstract: Three species of ornithischian dinosaurs (Daurosaurus olovus, Kulindapteryx ukureica, and Kulindadromeus zabaikalicus) from the Jurassic Kulinda locality (Transbaikalia, Russia) have been described. Kulindadromeus zabaikalicus was established on erroneous assumption that the locality contains only one dinosaurian taxon. The characters used in the diagnosis of this species, which were registered by the holotype (imprint of bones of an incomplete distorted skull on the rock surface), cannot be treated unequivocally from the morphological point of view. [ABSTRACT FROM AUTHOR]

Abstract: New records of Saucrosmylidae from two Mongolian localities of Bakhar (upper Middle Jurassic-lower Upper Jurassic) and Khoutiin-Khotgor (Upper Jurassic) are reported. This is the first record of the family from Central Asia and the second finding outside the type locality of Daohugou (China). Two new species and a new genus, Chorilingia bakharica sp. nov. (Grammolingiidae) and Opapanfilovia bonata gen. et sp. nov. (Panfiloviidae) from Bakhar and Sai-Sagul (Kyrgyzstan, upper Lower Jurassic-lower Middle Jurassic) localities, respectively, are described. The complete list of known records of Grammolingiidae, Saucrosmylidae, and Panfiloviidae is provided. The clade Grammomorpha nom. nov. is introduced for the three families based on their venation characters. The analysis of the fossil record has shown that Grammomorpha was an exclusively Jurassic group that became extinct close to the Jurassic-Cretaceous boundary due to unknown causes. [ABSTRACT FROM AUTHOR]

Abstract: New material from the Upper Kimmeridgian and Volgian of the Gorodishche section (Ulyanovsk Region, Russia) allows a more accurate definition of the tabulation formula and archeopyle morphology of the dinocyst genus Dingodinium. The partiform pattern of the antapex and morphological features of the epicyst indicate that the genus Dingodinium should be attributed to the family Cladopyxiaceae of the suborder Cladopyxiineae. The genus Dingodinium as well as the species D. albertii, D. jurassicum, and D. tuberosum are revised, and a new species, D. nequeas, is described. In addition, the published data on Jurassic and Cretaceous species of the genus Dingodinium are analyzed and morphological criteria allowing their identification are recognized. Many species have a wide geographic distribution. Some species can be regarded as stratigraphically important for certain intervals of the Jurassic and Cretaceous. [ABSTRACT FROM AUTHOR]

A new genus, Boreomica gen. nov., is established; it comprises small-sized gastropods widespread in the Jurassic of the Russian Plate, the taxonomic position of which was ambiguously treated by previous authors. The new genus is assigned to the family Rissoidae. The species composition and stratigraphical and geographical distribution of the genus and its species are discussed. From the Jurassic of the Russian Plate, Callovian Boreomica exigua (Gerasimov, 1992), the type species of the genus, and Kimmeridgian-Volgian Boreomica undulata (Tullberg, 1881), and members of the genus without species status from the Bathonian and Upper Oxfordian are described. Conchological polymorphism of species connected with their eurybiontic characteristics is discussed. Based on the study of samples of the species B. exigua from different types of facies, two subspecies are recognized, B. exigua exigua and B. exigua arenosa subsp. nov. Finds of gastropods morphologically similar to Boreomica are discussed: Katosira? sp. from Mitta et al., 2004, 'Procerithium?' volgense Gerasimov, 1955, 'Eulima' pusilla Tullberg, 1881, and 'Hudlestonella' caleptra sensu Gerasimov, 1992 are considered. It is concluded that E. pusilla and H. caleptra are unknown zygopleurids, Katosira? sp. is likely a poorly preserved Katosira, and 'Procerithium?' volgense is represented by a mixture of several species belonging to different genera: several zygopleurid species, the rissoids Boreomica undulata and Bralitzia. Shells of P. volgense in the P.A. Gerasimov's collection from the Craspedites nodiger Zone are described as Laevipleura sp. [ABSTRACT FROM AUTHOR]

The history of the study and review of generic and species diversity of Mesozoic rissoid gastropods are provided. The generic composition of Jurassic rissoid gastropods is revised, so that it is proposed to regard them as the family Rissoidae, comprising the genera Bralitzia, Buvignieria, Palaeoceratia, and Palaeorissoina. It is tentatively proposed to assign the genus Hudlestoniella to Rissoidae; this is caused by insufficient morphological knowledge of this genus. The family Palaeorissoidae is regarded as a synonym of Rissoidae. Stratigraphical and geographical distribution of Rissoidae genera is reviewed. From the Jurassic of European Russia, the following species of the genus Buvignieria are described: B. calloviana Gründel, B. imminuera Gründel, B. paucicostata Gründel, B. eichwaldiana (Rouillier), B. choroshovensis Gerasimov, and B. gruendeli sp. nov. The morphological characteristics and stratigraphical distribution of these species are provided. Based on extensive material, the taxonomic significance of particular conchological characters for the establishment of species is discussed. [ABSTRACT FROM AUTHOR]

The scaphopod families Pulsellidae and Gadilidae from sandy and clayey beds of the Jurassic (Callovian-Volgian) of European Russia are investigated. In Pulsellidae, the following taxa are described: Annulipulsellum with two subgenera, Annulipulsellum (species A. ambiguum sp. nov., A. rugosum sp. nov.) and Mesopulsellum subgen. nov. ( A. alternoides sp. nov., A. calloviense sp. nov., A. hirtistriatum sp. nov., A. medium sp. nov.), Gracilipulsellum gen. nov. ( G. iodaense sp. nov.), Gardneridentalium gen. nov. ( G. primitivum sp. nov., G. reticulatum sp. nov.), and Mesoentalina gen. nov. ( M. fabulosa sp. nov.). New taxa of the family Gadilidae include the genus Mesoantalis gen. nov. with the species M. clava sp. nov., M. expolitum sp. nov., and M. volgense sp. nov. [ABSTRACT FROM AUTHOR]

The scientific value of insect fossils is very high. The first remains of insects were discovered during the third Asian expedition of the American Museum of Natural History (1923) to the Anda-Khuduk locality. To date, 112 localities, from the Permian to Neogene, have been found in Mongolia, including the world's largest lagerstätten Böön Tsagaan and Shar Teg. Most of them are Jurassic and Lower Cretaceous localities; Jurassic localities are significantly less numerous than Lower Cretaceous ones, which account for more than half of all known localities. Paleoentomological surveys have been performed with a varying intensity by the Joint Soviet-Mongolian Paleontological Expedition (JSMPE) and Joint Russian-Mongolian Paleontological Expedition (JRMPE) since 1970. A total of 17 expedition trips have been carried out. As a result, several tens of thousands of insect remains representing 29 orders, 299 families, 695 genera, and 870 species were obtained. However, the systematic position of many forms, especially homopetrans, coleopterans, and dipterans, has not been described or often even identified. More than 300 works have been published on the fossil insects of Mongolia, but less than half of the collected material has been described. Along with the paleontological collections, considerable attention was paid to paleoecological observations. To understand the history of water bodies, detailed studying and description of the structure of sediments and their stratigraphy have been performed. It has been revealed that ecosystems of ancient water bodies differed significantly from what could be restored based on Recent analogues. A new scheme of stratigraphic relationships between Jurassic and Cretaceous localities is provided. The analysis of paleogegraphic distribution of insect remains showed that localities of western Mongolia belong to a different paleozoogeographic division than the rest of its territory, which is biotically similar to Transbaikalia and China. [ABSTRACT FROM AUTHOR]

Three Transbaikalian localities of dinosaur remains confined to concretions of the Tarbagatai Coal Field, coal deposits of the Arbagarskaya deposits, and tuffaceous sedimentary deposits of the Ukureiskaya Formation of the Olov Depression (Kulinda locality) are considered. In concretions, dinosaur fossils co-occur with fragmentary and complete skeletons of Salmo and Palaeoniscidae and tuffaceous sedimentary beds of volcanic lakes have yielded fossils of temporary inhabitants, such as notostracans, conchostracans, izophlebiid dragonflies, ostracods, and plants with index species of the Late Jurassic Unda-Daya Assemblage. These characteristics can be used in searching for Jurassic dinosaur burials in Mongolia. The horizons with concretions are known in the Tormkhon, Tevsh, Unduruhin, Anda-Khuduk, and Ulanereg formations. Remains of notostracans and izophlebiid dragonflies were recorded in the Ulugei Formation and terrigenous deposits of the Khalgyn-Ula locality and mass burials of large izophlebiid dragonflies and Palaeoniscidae have occur in the Dorogot Formation. [ABSTRACT FROM AUTHOR]

Morphology and ethology of the Middle-Late Jurassic oyster ' Liostrea' roemeri (Quenstedt) from the Upper Callovian of the Volga Region near Saratov and Middle Volgian of the Subpolar Urals are considered. The inverted shell shape and presence of a beaked umbo on the right valves allow the assignment of these oysters to a new monotypic genus, Argutostrea Kosenko, gen. nov. Features of the internal valve structure examined in only one specimen suggest that the new genus should tentatively be included in the subfamily Pycnodonteinae Stenzel, 1959 of the family Gryphaeidae Vialov, 1936. It is shown that shell morphology of the oyster A. roemeri is connected with transition to dwelling on floating ammonites. [ABSTRACT FROM AUTHOR]

The rudimentary outgrowths in fixed positions on the collars of Nagrenia samylinae Nosova (plant closely related to Ginkgo biloba L.) and similar rudiments in extant Ginkgo suggest that the collar of Ginkgo was initially a bilateral structure with directional growth, which bore ovule on its abaxial side. The collar of Ginkgo is interpreted as a vestigial organ. In the light of the data obtained, the origin and phylogeny of Ginkgoales are discussed; the most probable ancestors of Ginkgoales are Umkomasiales (Corystospermales) and allied plants. Thus, the new data confirm the interpretation of the collar of Ginkgo proposed by Meyen (1984) and are consistent with his hypothesis of the origin of Ginkgoales. [ABSTRACT FROM AUTHOR]

Kimmeridgian-Volgian Aporrhaidae from European Russia are described for the first time. They are referred to three genera, including two new genera, Undoriptera gen. nov. and Volgacheilus gen. nov. with three new species, Undoriptera tridactylus sp. nov., Volgacheilus rogovi sp. nov., and Dicroloma tenuistriata sp. nov. [ABSTRACT FROM AUTHOR]

Based on the analysis of distribution of Middle-Late Jurassic foraminifers of the western Caucasus in each particular paleotectonic zone, the evolutionary dynamics of foraminiferal assemblages and their relationships are reconstructed. The evolutionary rates of Callovian-Tithonian foraminiferal assemblages in the paleotectonic zones are considered against a background of facies changes. Common and distinctive features in the change of foraminiferal communities and facies at different stages of foraminiferal evolution and the quality of environments for the development of foraminiferal associations are recognized. [ABSTRACT FROM AUTHOR]

A new subgenus, Isognomon ( Semignomon), and eight new species Isognomon ( Semignomon) tabasicum, Arcomytilus nudus, Plagiostoma immensum, Pinna Alborzica, Trigonia plana, Protocardia razavii, Corbula jurassica, and Ceratomya persica are described from the Jurassic of Iran. [ABSTRACT FROM AUTHOR]

A new genus and species of saldoid bugs, Kubecora ignamica gen. et sp. nov. (Heteroptera, Archegocimicidae), is described from the Middle Jurassic (Itat Formation) locality Kubekovo, East Siberia. [ABSTRACT FROM AUTHOR]

The new species Protorhyphus rohdendorfi sp. nov. (Protorhyphidae), Mesorhyphus handlirschi sp. nov., and M. hennigi sp. nov. (Anisopodidae), Procramptonomyia ponomarenkoi sp. nov. and P. kovalevi sp. nov. (Procramptonomyiidae) are described from the Upper Jurassic deposits of Mongolia (Shar Teg); some features of Archirhyphus asiaticus Rohdendorf, 1964 are revealed. The latter two species are also known from the locality of Karatau (Kazakhstan, J). The genus Tega Blagoderov, Krzemińska, and Krzemiński, 1993 is transferred from the family Cramptonomyiidae into Anisopodidae (Teginae subfam. nov.). [ABSTRACT FROM AUTHOR]

A new subfamily, Pseudobrieniinae, including the new genus Pseudobrienia and the new species Pseudobrienia rasnitsyni, Kararhynchus jurassicus, and K. gratshevi, are described from the Middle-Late Jurassic of Karatau. K. occiduus Zherikhin et Gratshev, 1993 is redescribed. [ABSTRACT FROM AUTHOR]

A new subfamily, Juranthribinae, new genera Juranthribus and Karanthribus, and new species Juranthribus thompsoni and Karanthribus primitivus are described from the Middle-Upper Jurassic of Karatau. This is the earliest known record of anthribids. [ABSTRACT FROM AUTHOR]

Daohugounectes primitivus, a new genus and species of coptoclavid beetles, is described from 67 fossil larvae from the Jurassic locality of Daohugou, northeastern China. It differs from other coptoclavids in the combination of the following characters: lateral lobes of nasale present; legs relatively short, with tarsi flat and slightly dilated; abdominal tergite VIII almost circular; derivative of abdominal segment IX present; urogomphi short; and helical thickening of tracheae weak. Most of these features are plesiomorphic for the family Coptoclavidae and the superfamily Dytiscoidea. Among dytiscoids, a derivative of abdominal segment IX is present only in the larvae of the recently discovered relic family Aspidytidae. [ABSTRACT FROM AUTHOR]

A new genus and two new species of water scavenger beetles, Hydrophilopsia bontsaganica, sp. nov. and Prospercheus cristatus, gen. et sp. nov., are described from the Upper Jurassic and Lower Cretaceous of Mongolia. The systematic position of the new genus is discussed. [ABSTRACT FROM AUTHOR]

The radiation of the Jurassic bryozoans of the class Stenolaemata, which started in seas of the Bajocian and Bathonian of western Europe, is shown to be continued in basins of eastern Europe during the extensive Middle Callovian transgression. The taxonomic composition of stenolaemate bryozoans from the Jurassic of central European Russia and main features of their colonial morphology are discussed. [ABSTRACT FROM AUTHOR]

The fossil history of the family Geinitziidae is reviewed. New taxa are described in the family: Shurabia hissarica, sp. nov. (Lower Jurassic of Tajikistan), Sh. shartegica, sp. nov. (Upper Jurassic of Mongolia), Sh. serrata, sp. nov. and Ginitzia sagulensis, sp. nov. (both Lower Jurassic of Kyrgyzstan). The subfamily Stegopterinae Sharov, 1961 is synonymized under Geinitziinae Handlirsch, 1906. The genera Minesedes Fujiyama, 1973 and Ominea Fujiyama, 1973 (Upper Triassic of Japan) are synonymized under Shurabia Martynov, 1937 and Geinitzia Handlirsch, 1906, respectively. Geinitzia varia Bode, 1953 (Lower Jurassic of Germany) and Fletchizia picturata Riek, 1976 (Upper Triassic of South Africa) are redescribed from their holotypes. F. kapokraalensis Wappler, 2001 and F. aleda Wappler, 2001 (both Upper Triassic of South Africa) are transferred to the genus Shurabia. [ABSTRACT FROM AUTHOR]

Lower Callovian deposits ( subpatruus and koenigi ammonite zones) in the Mikhailovskii Mine section (Central Russia, Kursk Region) yielded 13 ostracode species (two of them are new) belonging to ten genera. This ostracode assemblage corresponds to ostracode beds with Praeschuleridea wartae-Pleurocythere kurskensis. The stratigraphic range of these beds corresponds to three ammonite biohorizons: Chamoussetia crobyloides, Kepplerites gowerianus gowerianus, and K. indigestus. Three distinct ostracode assemblages have been defined in the section based on their taxonomy and occurrence pattern. Two new species, Pleurocythere kurskensis sp. nov. and Pseudohutsonia wienholzae sp. nov., are described. [ABSTRACT FROM AUTHOR]

The stonefly genera Dobbertiniopteryx Ansorge and Karanemoura Sinitshenkova are revised. Based on new material from the Middle Jurassic of Daohugou, China, two new species, D. juracapnia sp. nov. and K. manca sp. nov., are described and Karanemoura abrupta Sinitshenkova, 1987 is redescribed. K. desiliens Sinitshenkova, 1987 is excluded from Karanemoura; its position within the family Perlariopseidae remains uncertain. The placement of Dobbertiniopteryx in the modern family Capniidae is confirmed. The perfect state of preservation of the nearly complete adult stonefly remains from China made it possible to improve and extend the diagnoses of the Perlariopseidae and Dobbertiniopteryx. The geological background of the Daohugou deposits is briefly discussed. [ABSTRACT FROM AUTHOR]

This paper describes the Middle Jurassic flora of the Peski locality (Moscow Region), a unique locality for fossil flora and fauna. The systematic composition, age of the flora, and plant taphonomy in context of paleorelief are considered. Plant associations are reconstructed. The paleogeographical significance of the flora is discussed. [ABSTRACT FROM AUTHOR]

Podocarpophyllum Gomolitzky is studied in detail from the type locality Angren (Uzbekistan, Middle Jurassic). Emended diagnoses of the genus and its type species P. singulare Gomolitzky are provided. For the first time, members of the genus are reported from the Lower Jurassic of the Mangyshlak Peninsula (western Kazakhstan), where P. kazachstanicum sp. nov. is described, and from the Middle Jurassic of the eastern Ural Mountains, where P. mesozoicum (Kiritchkova) comb. nov. is established. The epidermal morphology of the genus Podocarpophyllum is compared with that of fossil and modern members of the Podocarpaceae. [ABSTRACT FROM AUTHOR]

New bryozoans from the Middle Callovian (Middle Jurassic) of Moscow city ( Reptomulticava pileola sp. nov.) and the Moscow Region ( Spirodella radiolobata gen. et sp. nov.) and from the Middle Oxfordian (Upper Jurassic) of the Kostroma Region ( Hyporosopora mittai sp. nov.) are described. All three bryozoans belong to the class Stenolaemata. Some features of their colonial organization and environmental conditions are discussed. [ABSTRACT FROM AUTHOR]

A new species, Oswaldheeria eximia sp. nov., was discovered in the Bathonian continental deposits of an open-cast mine of Mikhailovskii Rudnik Mines, near the town of Zheleznogorsk in the Kursk Region. This is the first record of Oswaldheeria Bose et Manum from European Russia. The leaf anatomy of Oswaldheeria, reconstructed for the first time based on material of unique preservation, has shown that members of this genus were not closely related either to the Ginkgoales or to modern Sciadopitys Siebold et Zucc. [ABSTRACT FROM AUTHOR]

Based on the study of more than 300 isophlebiid specimens from several Late Mesozoic sites in eastern Transbaikalia (Ukurei, Tergen’, Glushkovo, and Byankino formations), new genera and species are described: Xeta olovica, Dahurium draco, and Sinitsia sophiae. The insect-bearing deposits are dated Late Jurassic according to analysis of their odonatofauna. [ABSTRACT FROM AUTHOR]

The wide distribution of the genus Ammosiphonia in the Upper Jurassic and Carboniferous of Western Siberia is established for the first time. Six haplophragmoidid species of Western Siberia are assigned to this genus. The diagnosis of the genus is emended; the taxonomic positions and scopes of the species Ammosiphonia nonioninoides (Reuss), A. beresoviensis (Bulatova), and A. sibirica (Zaspelova) are revised; two new species, A. suprajurassica sp. nov. and A. valanginica sp. nov., are described. [ABSTRACT FROM AUTHOR]

Four new species of mayfly nymphs, Furvoneta relicta sp. nov., Clavineta eximia sp. nov. (originally Mesoneta antiqua), Mesobaetis latifilamentacea sp. nov., and Stackelbergisca cylindrata sp. nov. are described from the Jurassic of China. All these species may have inhabited lakes rather than flowing water. The geological age and stratigraphical correlation of the nymph-bearing strata are briefly reviewed. [ABSTRACT FROM AUTHOR]

About 40 type specimens of archostematan beetles from the Jurassic, Lower Cretaceous, and Paleogene of England, named by P. Brodie, J.O. Westwood, C. Giebel, A. Handlirsch, F. Zeuner, P. Whalley, and R. Crowson and stored in the Paleontological Department of the Natural History Museum (London) are redescribed. Nine genera and 11 species are recognized, three genera are assigned to Archostemata for the first time. One new species, Tersus crowsoni (Schizophoridae), is described. [ABSTRACT FROM AUTHOR]

new species of variegated mud-loving beetles, Heterocerites magnus, sp. nov., is described from the Late Tithonian-Berriasian of China (Huangbanjigou, Yixian Formation). This is a second known representative of the family in the Mesozoic. [ABSTRACT FROM AUTHOR]

The genus Arnoldibelus is reviewed. Two new species, A. zherichini and A. gratshevi, closely related to A. karatavicus, from the Middle-Late Jurassic of the Karatau Mountains are described. An identification key to species of the genus Arnoldibelus is provided. [ABSTRACT FROM AUTHOR]