-
Devonian Radiolarian Ecozones of Northern Eurasia Paleontol. J. (IF 0.5) Pub Date : 2020-12-30 M. S. Afanasieva
Abstract This study provides a description of the Devonian radiolarian associations of northern Eurasia and discusses their role in the evolution of Earth’s biosphere. It contributes to evolutionary studies of the Earth and its organic world by reconstructing the diversity dynamics of the Devonian radiolarian biota and the chorology of its components, at the same time revealing the biostratigraphic
-
Biogenic Contamination and Mineral Pseudo-Biogenic Structures in Earth Rocks and Astromaterials Paleontol. J. (IF 0.5) Pub Date : 2020-12-28 E. A. Zhegallo
Abstract Bacterial paleontology studies the roles played by organisms in the genesis of sediments and ores. It is, therefore, important to clearly distinguish in-situ biological objects present in the rock material from various contaminants of later origin and from mineral structures that merely resemble organisms. The same is crucial for correct interpretation of alleged biogenic structures found
-
Microbiomorphic Analysis of Paleosols from the Upper Quaternary Deposits of the Kolyma Lowland Paleontol. J. (IF 0.5) Pub Date : 2020-12-28 D. A. Lopatina, O. G. Zanina
Abstract— This work presents the results of the study of microbiomorphs (pollen, spores, phytoliths, diatoms, shells of testate amoebae, sponge spicules, plant tissue remains) from the paleosols of the Upper Quaternary deposits of the Kolyma Lowland. The analysis of their abundance and diversity, as well as the relationships between different types of biomorphs, made it possible to clarify the genesis
-
Soil Biomarkers as Indicators of Landscape Evolution on the Russian Plain Paleontol. J. (IF 0.5) Pub Date : 2020-12-28 I. V. Kovalev, N. O. Kovaleva
Abstract Biomarkers, due to their structure and biochemistry, are resistant to soil degradation and mineralization under particular environmental conditions, and therefore can provide molecular evidence of paleobiota and past land vegetation, and of the intensity of not only modern, but also past biochemical processes in the biosphere. Parameters of the humus group composition, optical densities of
-
Culturable Bacterial Communities Isolated from Cryo-Arid Soils: Phylogenetic and Physiological Characteristics Paleontol. J. (IF 0.5) Pub Date : 2020-12-28 A. A. Belov, V. S. Cheptsov, E. A. Vorobyova, N. A. Manucharova, Z. S. Ezhelev
Abstract The results of the phylogenetic analysis and analysis of the physiological characteristics of metabolic activity of strains isolated from frozen sedimentary rocks collected in the Antarctic and the Severnaya Zemlya archipelago are reported in this article. A comparable abundance of cultured cells and close morphological diversity of colony morphotypes were revealed in all samples. Representatives
-
Microbially Mediated Organomineralization in Paleozoic Carbonate Ooids Paleontol. J. (IF 0.5) Pub Date : 2020-12-28 A. I. Antoshkina, E. A. Zhegallo, S. I. Isaenko
Abstract This article reports the first results of studies on microbially mediated organomineralization in carbonate ooids from the Paleozoic sections of the Timan–Northern Ural region, which were formed in different environments and had different original mineral composition (calcite, Mg-calcite, and dolomite). Using a scanning electron microscope, mineralized microbial biofilms preserved in various
-
The Use of Modern Physical Methods of Instrumental Analytics in the Study of Stromatolites Paleontol. J. (IF 0.5) Pub Date : 2020-12-28 A. V. Pakhnevich, L. V. Zaytseva, O. S. Samylina, S. E. Kichanov
Abstract The use of X-ray microtomography, neutron tomography, scanning electron microscopy and X‑ray microanalysis in the study of stromatolites is discussed, and the advantages of each of these methods are summarized. Scanning electron microscopy allows study of the morphology of the object surface. Information about the composition and ratio of chemical elements of surface structures can be obtained
-
Volcanic Soil Series of the Lesser Caucasus as an Archive of Early Pleistocene Paleoecological Information Paleontol. J. (IF 0.5) Pub Date : 2020-12-28 N. O. Kovaleva, E. M. Stolpnikova
Abstract Early Pleistocene volcanic soil series exposed in archaeological sites of the Lori Plateau and the Upper Akhurian Lowland of the Armenian Upland were studied. The study considers the isotopic composition of organic carbon and the content of n-alkanes, not previously analyzed in this area. Both these parameters indicate the waterlogged conditions of Early Pleistocene soil formation as is also
-
Bacterial Diversity of the Soil of the Polar Tundra of Russia Paleontol. J. (IF 0.5) Pub Date : 2020-12-28 J. J. Berestovskaya, N. V. Pimenov, L. V. Vasilyeva
Abstract— This review summarizes the results of the study of bacterial communities of seasonally thawed soil horizons in the polar tundra of Russia. It has been shown that the representatives of different physiological groups of microorganisms developing in the soils of this extremely cold habitat are involved in the global biological cycle of carbon. Light has been thrown upon the role of microorganisms
-
Carbon and Nitrogen Isotope Composition of the Wood of Pinus sylvestris, Betula pendula and Populus tremula Paleontol. J. (IF 0.5) Pub Date : 2020-12-28 P. Yu. Voronin, V. A. Mukhin, T. A. Velivetskaya, A. V. Ignatiev, Vl. V. Kuznetsov
Abstract Proportions of 13C/12C and 15N/14N isotopes were identified in different woody compartments of birch (Betula pendula Roth), pine (Pinus sylvestris L.) and aspen (Populus tremula L.) trunks in preforest-steppe and pine-birch forests of the Middle Urals using mass spectrometry. The data were analyzed and interpreted from the perspective of the biochemical processes of carbon and nitrogen metabolism
-
Gigantic Valletia (Bivalvia, Rudistae) from the Lower Berriasian of Southwestern Crimea Paleontol. J. (IF 0.5) Pub Date : 2020-12-17 B. T. Yanin
Abstract A gigantic shell of a rudist of the genus Valletia is described for the first time from the Lower Berriasian of Southwest Crimea. The lithology and geological age of the host rock are discussed.
-
Additions to the Diagnosis of the Bryozoan Class Stenolaemata Paleontol. J. (IF 0.5) Pub Date : 2020-12-17 L. A. Viskova
Abstract Some characteristic features of the colonial morphology of the bryozoan order Melictrititida Pergens, 1890 are discussed. Although this order belongs to the class Stenolaemata, these features were not indicated in the diagnosis of this class. These features include funnel-shaped zooids, either elongated or shaped like shortened chambers; calcareous facettes, rhomboidal, pentagonal, or hexagonal;
-
Paleopathology: Occurrence of Anomalies in the Elements of Devonian Conodonts Paleontol. J. (IF 0.5) Pub Date : 2020-12-17 V. M. Nazarova, L. I. Kononova
Abstract Twenty types of conodont element pathology are considered, and the examples of Abrasio, Accessio, Caudatio, Depressio, Diminutio, Duplicatio, Fusio, Impressio, Jugatio, Occlusio, and Suppressio pathologies identified in the Devonian of the Voronezh Anteclise are illustrated in detail. All pathological phenomena are assigned to five genetic groups: (1) mechanical damage to hard tissue; (2)
-
A New Kotlassiid (Amphibia, Seymouriamorpha) from the Terminal Permian of Eastern Europe Paleontol. J. (IF 0.5) Pub Date : 2020-12-17 V. V. Bulanov
Abstract— The first kotlassiid species of the Vyazniki Faunal Assemblade, Microphon terminalis sp. nov., is described from the terminal Permian of the Bykovka locality (Vladimir Region, Russia). The diagnostic characters of M. terminalis are the preservation of nasolacrimal duct throughout ontogeny and some features of the marginal teeth, such as the moderately thickened proximal parts of the crowns
-
Streptoiocrinus gen. nov. (Disparida, Crinoidea) from the Lower and Middle Ordovician of the Leningrad Region, and Fluctuating Asymmetry of Radial Symmetry Paleontol. J. (IF 0.5) Pub Date : 2020-12-17 S. V. Rozhnov
Abstract A crown of Streptoiocrinus gen. nov., with its articulated stem, the columnals of which have long been known in the Billingen and Volkhov regional stages (Floian and Dapingian stages) of the Leningrad Region and Estonia are described. A detailed study of the crown and stem morphology showed that the new genus belongs to the disparid crinoid superfamily Ioсrinacea. This genus is the first mass
-
A Review of the Mesozoic and Cenozoic Mammals of Mongolia Paleontol. J. (IF 0.5) Pub Date : 2020-12-17 A. V. Lopatin
Abstract In Mongolia, fossil mammals are known from the Upper Jurassic, Lower and Upper Cretaceous, all series of the Paleogene and Neogene, as well as the Pleistocene. Over 335 new species and more than 185 new genera of fossil mammals (not including synonyms) were described from Mongolia up to the end of 2019. The most important results in the last hundred years of research, that most strongly influenced
-
New Damselflies of the Family Kennedyidae (Odonata) from the Permian of European Russia Paleontol. J. (IF 0.5) Pub Date : 2020-12-17 A. S. Felker
Abstract One new damselfly genus and species, Progophlebia tarasenkovae gen. et sp. nov., and two new species from known genera: Progoneura kityakensis sp. nov. and Kennedya tyulkinensis sp. nov. of the family Kennedyidae (Odonata: Protozygoptera) from several Permian localities (Vyazovka, Kityak, and Tyulkino) of European Russia are described. All known representatives of the family are briefly reviewed
-
Dinosaur Tracks from the Caucasian Mineral Waters Country in the Context of the Study of Lower Cretaceous Paleosols of This Region Paleontol. J. (IF 0.5) Pub Date : 2020-12-17 S. V. Naugolnykh
Abstract This article examines the geological and stratigraphic context of several types dinosaur tracks discovered in Lower Cretaceous deposits exposed in the vicinity of city of Kislovodsk (Caucasian Spa Country; Stavropol Krai). The tracks occur on the bedding surfaces of Lower Cretaceous (Valanginian) limestones, dolostones and marls. Two track morphotypes are described. Some ideas are proposed
-
New Protocytheridae and Mandocytheridae Ostracods from the Aptian of the Crimean Mountains Paleontol. J. (IF 0.5) Pub Date : 2020-12-17 M. S. Karpuk
Abstract Two new Ostracoda species are described from Aptian sediments of the Crimean Mountains, Protocythere whatleyi Karpuk, sp. nov. (Protocytheridae Lyubimova, 1955) and Homocythere spinasphaerica Karpuk, sp. nov. (Mandocytheridae Gründel, 1969).
-
Rhizoid Structures of Axophyllum Cavum Trautschold, 1879 (Rugosa) in the Middle Carboniferous of the Moscow Basin: Morphology and Origin Paleontol. J. (IF 0.5) Pub Date : 2020-12-17 E. S. Kazantseva
Abstract— Axophyllum cavum Trautschold, 1879 (Rugosa: Stauriida: Axophyllidae), a common solitary coral in the Moscovian stage of the Moscow Basin, is briefly redescribed. It is characterized by the small size of adult individuals (a few centimeters) and a high occurrence frequency of rootlet structures on the epitheca that supported the attachment of the coral on the substrate. The extensive collection
-
Unbranched Holdfasts of Stemmed Echinoderms from the Ordovician of the Leningrad Region Paleontol. J. (IF 0.5) Pub Date : 2020-12-17 G. A. Anekeeva, S. V. Rozhnov
Abstract— Based on examination of the collection of stemmed echinoderm holdfasts from the Ordovician of the Leningrad Region (Russia), all holdfasts are divided in two large groups: “unbranched” and “branched”. In total, 11 morphotypes of unbranched holdfasts are identified and described in detail.
-
The First Record of Lacewings (Insecta: Neuroptera: Mesochrysopidae) from the Lower Cretaceous of South Korea Paleontol. J. (IF 0.5) Pub Date : 2020-11-23 A. V. Khramov, G. S. Nam
Abstract Tachinymphes koraiensis sp. nov., a new member of the family Mesochrysopidae (Neuroptera), is described from the Lower Cretaceous Jinju Formation (South Korea), constituting the first record of fossil lacewings from the Korean Peninsula. The evolutionary history of Mesochrysopidae is discussed, and myrmeleontoid-like modifications of wing venation associated with improved flying ability are
-
Ecological and Taxonomical Succession of Rhynchonellids (Brachiopoda) in the Devonian and Early Carboniferous of Transcaucasia Paleontol. J. (IF 0.5) Pub Date : 2020-11-23 A. V. Pakhnevich
Abstract The Devonian and Early Carboniferous brachiopod assemblages of the order Rhynchonellida from Transcaucasia (Nakhchivan Autonomous Republic of Azerbaijan and Armenia) are described. The succession of dominating rhynchonellid superfamilies and ecological types has been identified. Rhynchonellids were numerous in the Devonian; in the Early and Middle Devonian, the representatives of the superfamily
-
New Early Permian Species of Radiolaria of the South Urals and Western Mugodzhary Paleontol. J. (IF 0.5) Pub Date : 2020-11-23 M. S. Afanasieva
Abstract Five new species of Early Permian radiolarians are described from the South Urals and Western Mugodzhary: Spongentactinia crassitunicata sp. nov., S. ordinaria sp. nov., S. tenuireticulata sp. nov., Polyentactinia sakmarica sp. nov., and Microporosa interisol sp. nov.
-
Histology of Dvinosaurus campbelli (Temnospondyli, Dvinosauria) from the Late Permian Locality Gorokhovets, Vladimir Region Paleontol. J. (IF 0.5) Pub Date : 2020-11-23 A. V. Uliakhin, P. P. Skutschas, P. G. Saburov
Abstract This study describes the microanatomical and histological structure of the femur and hypocentra of the neotenic temnospondyl amphibian Dvinosaurus campbelli from the Late Permian locality Gorokhovets, Vladimir Region (Upper Vyatkian Substage, subzone Chroniosuchus paradoxus of the Scutosaurus karpinskii zone). The femur of D. campbelli is characterized by a “pachyosteous” structure (dense
-
New Data on the Sterile and Fertile Structures, in situ Spores of Svalbardia osmanica Petrosjan et Radczenko (Archaeopteridales) from the Givetian of the Kuznetsk Basin, Russia Paleontol. J. (IF 0.5) Pub Date : 2020-11-23 A. L. Jurina, O. A. Orlova, M. G. Raskatova
Abstract Svalbardia osmanica Petrosjan et Radczenko from the Middle Devonian deposits (Izyly Formation) of Kuznetsk Basin is re-studied from the type material (CNIGR-museum, Saint-Petersburg). An emended diagnosis of S. osmanica including new data on morphology and anatomy of sterile plant fragments and fertile structures with in-situ spores from the microsporangia is given. Dispersed spores from the
-
A Fossil Bunting Emberiza shaamarica (Aves, Emberizidae) from the Upper Pliocene of Central Asia Paleontol. J. (IF 0.5) Pub Date : 2020-11-23 E. S. Palastrova, N. V. Zelenkov
Abstract New materials on “Rhodospiza” shaamarica Zelenkov et Kurochkin, 2012 from the Upper Pliocene of Shaamar (Northern Mongolia) and Beregovaya (Southern Transbaikalia; Russia) localities are described. It is shown that R. shaamarica should be assigned to the genus Emberiza (Emberizidae): thus, this is the first fossil bunting species found in Asia. The morphological similarity of Emberiza shaamarica
-
The Permian Ammonoid Family Medlicottiidae in the Verkhoyansk Region Paleontol. J. (IF 0.5) Pub Date : 2020-11-23 R. V. Kutygin
Abstract Representatives of the family Medlicottiidae (Ammonoidea) from the Permian of the Verkhoyansk Region are revised. Medlicottiids in the region are represented only by the subfamily Uddenitinae and are only known from four stratigraphic levels in the Lower Permian. Prouddenites evolutus sp. nov., representing the terminal phase of the morphogenetic development of the genus Prouddenites is found
-
A New Agyrtid Beetle (Coleoptera, Agyrtidae) from the Lower Cretaceous Khasurty Locality Paleontol. J. (IF 0.5) Pub Date : 2020-11-23 O. D. Strelnikova, E. V. Yan, D. V. Vasilenko
Abstract The first fossil monotypic genus of the subfamily Necrophilinae (Coleoptera, Agyrtidae), Palaeonecrophilus buryaticus gen. et sp. nov., is described from a positive and negative imprint found at the Early Cretaceous Khasurty locality in Western Transbaikalia. The beetle is similar to modern Necrophilinae in the presence of notches on the apical antennomeres and the wide and flattened edges
-
The New Subspecies of the European Water Buffalo (Artiodactyla, Bovidae) from the Upper Pleistocene of the Russian Plain Paleontol. J. (IF 0.5) Pub Date : 2020-11-23 I. A. Vislobokova, K. K. Tarasenko, A. V. Lopatin
Abstract A new subspecies of the fossil European water buffalo, Bubalus murrensis extremus, is described from an almost complete skull found in the Upper Pleistocene deposits of the Lukerino village near the city of Kolomna (Moscow Region). The fossil is dated to the Allerød interstadial (12.8 cal. kyr). Until now, the species was only known from the Middle and early Late Pleistocene of Europe. New
-
New Finds of the Fossil Ant Genus Prionomyrmex Mayr (Hymenoptera, Formicidae, Myrmeciinae) in Late Eocene European Amber Paleontol. J. (IF 0.5) Pub Date : 2020-11-23 A. G. Radchenko, E. E. Perkovsky
Abstract A new species of the fossil genus Prionomyrmex, P. gusakovi sp. nov., represented by three workers from Baltic amber (Late Eocene, Priabonian, 33.9–37.2 Mya), is described. Prionomyrmex longiceps Mayr was first identified in the coeval Rovno amber from Ukraine. The differences between the species described and other known species of the genus are presented. The main problems of evolution and
-
Rare Nematoceran Dipterans (Insecta: Diptera) from the Khasurty Locality, Transbaikalia Paleontol. J. (IF 0.5) Pub Date : 2020-11-23 E. D. Lukashevich
Abstract New taxa of Nematocera are described from the Lower Cretaceous Khasurty locality (Western Transbaikalia, Russia). These are Praearchitipula ribeiroi sp. nov., P. kaluginae sp. nov., P. podenasi sp. nov. (Pediciidae), ?Protanyderus madrizi sp. nov. (Tanyderidae), Eoptychoptera fasbenderi sp. nov. (Ptychopteridae), Gilkania transbaikalica gen. et sp. nov. (Chironomidae), Amorimyia robusta gen
-
Rare and Endemic Elements in Triassic Tetrapod Assemblages of Obshchii Syrt Highland (Eastern Europe) Paleontol. J. (IF 0.5) Pub Date : 2020-11-23 I. V. Novikov, A. G. Sennikov, A. V. Ivanov
Abstract The historical sequence of Early Triassic tetrapod communities in the Obshchii Syrt area includes eight consecutive faunal assemblages: this degree of detail in the identification of evolutionary stages is unique on a global scale. Temnospondyl amphibians are the dominant elements in these tetrapod assemblages, with three capitosauromorph groups (capitosaurids, benthosuchids, and trematosaurids)
-
New Records of Ordovician Ostracodes from Two Genera of the Family Egorovellidae Schallreuter Paleontol. J. (IF 0.5) Pub Date : 2020-11-23 L. M. Melnikova
Abstract Based on published data and material from several Ordovician sections of the Siberian Platform and northeastern Russia housed in the Paleontological Institute of the Russian Academy of Sciences, the ostracode family Egorovellidae Schallreuter, 1966 is revised. The family is of great importance for biostratigraphic correlation. The diagnosis of the genus Bodenia V. Ivanova, 1959 is clarified
-
Shell Microstructure in Representatives of the Genus Lingulipora Girty from the Frasnian (Upper Devonian) Deposits of Southern Timan Paleontol. J. (IF 0.5) Pub Date : 2020-10-07 T. N. Smirnova, E. A. Zhegallo
Abstract The microstructure of the shell material in the protegulum brephic shells, and adult shells of Lingulipora gradata Batrukova, 1955 from the Upper Devonian deposits (Frasnian Stage) of South Timan is described. The structure of the interior part of the ventral valve was studied. The character of porosity was different in two species of the genus Lingulipora.
-
New and Little Known Gryllones Insects (Insecta: Gryllones: Cnemidolestida, Reculida) from the Triassic of Eurasia Paleontol. J. (IF 0.5) Pub Date : 2020-10-07 D. S. Aristov
Abstract New and little known Gryllones insects (Insecta: Gryllones) from the Triassic of Eurasia are described. The genus Yontala Aristov, 2005 from the Lower Triassic locality of Yontala (Induan Stage of the Vologda Region, Russia) is re-described and transferred to the family Sylvabestiidae of the order Cnemidolestida. Sharovala triassica gen. et sp. nov. (Cnemidolestida: Sylvabestiidae) from the
-
On the Systematic Position of Ferganotoechia Rzhonsnitskaia, 1978 (Rhynchonellida, Brachiopoda) Paleontol. J. (IF 0.5) Pub Date : 2020-10-07 A. V. Pakhnevich
Abstract The holotype and topotypes of Camarotoechia ferganica Nalivkin, 1930 are restudied. This species was erected based on a single complete shell, and subsequently assigned by M.A. Rzhonsnitskaya to the genus Ferganotoechia Rzhonsnitskaya in Rzhonsnitskaya, Kulikova et Petrosyan, 1978. However, the generic diagnosis was not published earlier. Here the shell interior of F. ferganica is first described
-
Findings of Diatom Algae in the Trunk and Buccal Cavity Content of a Mammoth from Sediments of the Late Pleistocene of Yakutia Paleontol. J. (IF 0.5) Pub Date : 2020-10-07 S. I. Genkal, V. A. Gabyshev, A. V. Protopopov
Abstract The study of the contents of the trunk and buccal cavity of a the remains of mammoth calf (Mammuthus primigenius) from Yakutia using scanning electron microscopy has revealed 14 species and varieties of Bacillariophyta and three forms which have been identified only to genus. The obtained data on the diatom species composition expand knowledge of the Pleistocene flora of Bacillariophyta in
-
Filamentous Cyanobacteria from the Vendian Deposits of the Nepa Regional Stage of Interior Areas of the Siberian Platform Paleontol. J. (IF 0.5) Pub Date : 2020-10-07 E. Yu. Golubkova, B. B. Kochnev
Abstract The morphological diversity and stratigraphic distribution of filamentous microfossils in the Vendian deposits of the Nepa Regional Stage of the interior of the Siberian Platform were analyzed. Hormogonian cyanobacteria of five genera (Nepia gen. nov., Talakania, Oscillatoriopsis, Obruchevella, and Siphonophycus) were identified in the composition of the Nepa biota. A monographic study was
-
The Shell Microstructure of the Earliest Paterinids (Brachiopoda) and Its Postmortem Alteration Paleontol. J. (IF 0.5) Pub Date : 2020-10-07 G. T. Ushatinskaya
Abstract The shell microstructure and its postmortem alteration were studied for two Early–Middle Cambrian paterinid families constituting the order Paterinida. The paterinid shells during life were organophosphate; most of the shell substance was organic. The organic matter after the death played an important role in the processes of postmortem alteration of the original microstructure. The conditions
-
Revision of Plioperdix (Aves: Phasianidae) from the Plio-Pleistocene of Ukraine Paleontol. J. (IF 0.5) Pub Date : 2020-10-07 N. V. Zelenkov, L. V. Gorobets
Abstract— Remains of small phasianid birds from several Pliocene and Pleistocene localities in the Northern Black Sea Region and Eastern Europe (Ukraine, Moldova, Poland, Czech Republic, and Hungary) are traditionally, based on similar proportions, assigned to Plioperdix pontica (Tugarinov, 1940). Our study of the bone material from Ukraine has shown that they in fact belong to several taxa of Galliformes
-
New Find of Inoceramus -Like Bivalves of the Genus Atomodesma in the Southern Verkhoyansk Region, and Invasions of Extra-Boreal Mollusks into Northeastern Asia during the Permian Paleontol. J. (IF 0.5) Pub Date : 2020-10-07 A. S. Biakov, R. V. Kutygin
Abstract Inoceramus-like bivalves of the bipolar species Atomodesma variabile Wanner were first found and precisely associated with the Upper Permian (Wuchiapingian) section in the Southern Verkhoyansk Region. The appearance of this exotic taxon in Boreal basins is associated with the short-term invasion of several Tethyan taxa into high-Boreal basins due to transgression. It is concluded that the
-
A New Bryozoan of the Genus Dianulites Eichwald from the Ordovician of Gorny Altai and the Russian Arctic Paleontol. J. (IF 0.5) Pub Date : 2020-10-07 A. V. Koromyslova, N. V. Sennikov
Abstract A new bryozoan species Dianulites altaicus sp. nov. (order Esthonioporata) is described from the Sandbian Stage of the Upper Ordovician of the environs of Lake Teletskoe in Gorny Altai. A collection of bryozoans of the genus Dianulites Eichwald, 1829 from the Lower and Middle Ordovician of the Novaya Zemlya archipelago and Vaygach Island in the Russian Arctic has been revised. Bryozoans from
-
Morphology, Paleobiology and Systematics of the Mobergellids, a Group of Cambrian Problematic Fossils Paleontol. J. (IF 0.5) Pub Date : 2020-10-07 Yu. E. Demidenko, P. Yu. Parkhaev
Abstract Possible variants of systematic position of Cambrian problematic fossils of the family Mobergellidae are discussed. An affinity between mobergellids and Sipuncula, a phylum of marine benthic worm-like lophotrochozoans possibly related to annelids, is proposed for the first time. The mobergellid discoidal sclerites are interpreted as caudal shields of sipunculans.
-
New Ammonoids from the Devonian–Carboniferous Boundary Beds in Berchogur (Western Kazakhstan) Paleontol. J. (IF 0.5) Pub Date : 2020-10-07 S. V. Nikolaeva
Abstract Old and new ammonoid collections from the Devonian–Carboniferous Boundary Section in Berchogur (Western Kazakhstan) are examined. The ammonoids come from the Acutimitoceras Genozone, from beds similar in age to the Stockum Fauna of Germany. The assemblage includes mostly species of the genera ?Imitoceras and Acutimitoceras, with diverse shapes of initial whorls. The new species Acutimitoceras
-
On New Records of Cephalopod Jaws from the Upper Bajocian (Middle Jurassic) of the Northern Caucasus (Russia, Karachay-Cherkessia) Paleontol. J. (IF 0.5) Pub Date : 2020-10-07 A. A. Mironenko, V. V. Mitta
Abstract New finds of cephalopod jaw apparatuses from the upper part of the Niortense Zone and the lower part of the Parkinsoni Zone (Upper Bajocian) from the interfluve of the Kuban and Urup rivers (Northern Caucasus) are described. Two isolated valves of aptychi which are considered to be ammonoid lower jaws are assigned to the superfamilies Haploceratoidea and Stephanoceratoidea. Two upper jaws
-
First Finds of Elliptoglossa Cooper (Brachiopoda, Lingulida) in the Upper Devonian of the Volga–Ural Region; Microstructure of the Protegular and Adult Shell Regions Paleontol. J. (IF 0.5) Pub Date : 2020-08-18 T. N. Smirnova; E. A. Zhegallo
AbstractElliptoglossa Cooper, 1956 is reported for the first time from the Frasnian, Upper Devonian of the Volga–Ural region. A new species E. kononovae sp. nov. is described. The microstructure of the inner surfaces of the ventral and dorsal valves and outer surface of the dorsal valve are described in detail. The shell microstructure is studied for the protegular and adult shell regions. The protegulum
-
First Report of Insect Endophytic Oviposition from the Upper Permian of the Pechora Basin, on a Leaf of Phylladoderma (Peltaspermopsida: Cardiolepidaceae) Paleontol. J. (IF 0.5) Pub Date : 2020-08-18 D. V. Vasilenko; E. V. Karasev
AbstractThe first endophytic oviposition from the Upper Permian of the Pechora Basin (Talbeyskaya Formation, Severodvinian–Vyatkian) is described in a formal system. Paleoovoidus krassilovi sp. nov. is a linear oviposition arranged in two oppositely directed rows on a leaf of Phylladoderma arberi Zalessky, 1913; it was probably produced by an odonatan insect. Cuticle punctures that probably represent
-
A New Lizard (Agamidae, Iguania) from the Late Paleocene of South Mongolia Paleontol. J. (IF 0.5) Pub Date : 2020-08-18 V. R. Alifanov
Abstract—The lizard Epileolis reshetovi gen. et sp. nov., Agamidae is described from the late Paleocene of South Mongolia. The new form is established based on a find of the left dentary with teeth. The new taxon is distinguished by the narrow-based prenatal teeth, seven canine-like teeth and the high coronoid process of the dentary.
-
A New Species of the Genus Protaneuretus Wheeler (Hymenoptera, Formicidae) from Bitterfeld Amber (Late Eocene), with a Key to the Species of the Genus Paleontol. J. (IF 0.5) Pub Date : 2020-08-18 D. A. Dubovikoff; G. M. Dlussky; E. E. Perkovsky; E. V. Abakumov
AbstractA second species of the genus Protaneuretus Wheeler, 1915, P. mirabilis sp. nov., is described from the late Eocene Bitterfeld amber. The new species is compared with the type species of the genus and key to species of Protaneuretus is provided.
-
A New Species of the Weevil Genus Anthonomus Germar, 1817 (Coleoptera: Curculionidae) in Dominican Amber Paleontol. J. (IF 0.5) Pub Date : 2020-08-18 A. A. Legalov; G. Poinar
AbstractA new species, Anthonomus aphelomerus Legalov and Poinar, sp. nov. from Early Miocene Dominican amber is described. The new species differs from Anthonomus browni Poinar and Legalov, 2015 in the smaller body size, thinner, weakly curved rostrum and weakly clavate femora; it is differs from Anthonomus clarki Legalov, 2019 in the longer rostrum and slightly convex body; it also differs from Anthonomus
-
The First Fossil Tody (Aves: Todidae) from Cuba Paleontol. J. (IF 0.5) Pub Date : 2020-08-18 N. V. Zelenkov; S. F. Gonzalez
AbstractTodies (Aves: Todidae)—endemic to the Greater Antilles and one of the most characteristic components of the modern fauna of Cuba—have not yet been represented in the island’s fossil record. This article describes the first fossil find of a representative of this family in Cuba. A coracoid from the Upper Pleistocene of the cave El Abrón (Pinar-del-Río province) in general morphology and size
-
A New Late Paleozoic Gastropod Genus Alanstukella gen. nov. (Trochonematidae) Paleontol. J. (IF 0.5) Pub Date : 2020-08-18 A. V. Mazaev
AbstractA new gastropod genus Alanstukella gen. nov., from the family Trochonematidae is described. The type species A. rossica (Stuckenberg, 1905), belongs to a small group of the largest Late Paleozoic representatives of the class Gastropoda. A. rossica has been shown to have pedomorphic features. Despite the extreme rarity of finds, the species has a wide geographical and stratigraphic distribution:
-
A New Benthosuchid (Amphibia: Temnospondyli) from the Lower Triassic of the Moscow Syncline Paleontol. J. (IF 0.5) Pub Date : 2020-08-18 B. I. Morkovin
AbstractA new benthosuchid Benthosuchus lukyanovi sp. nov. is described from the Early Triassic deposits of the Bludnovo locality in the Vologda Oblast (Yug River Basin). The new species has the largest skull among the known Benthosuchus specimens. Morphological differences between B. lukaynovi and the other representatives of the genus mostly concern the trematosauroid features: the position of the
-
New Caddisflies (Insecta, Trichoptera) of the Families Vitimotauliidae and Philopotamidae from the Khasurty Locality (Lower Cretaceous, Russia) with a Brief Review of the World Fossil Fauna Paleontol. J. (IF 0.5) Pub Date : 2020-08-18 I. D. Sukatsheva; D. S. Aristov
Abstract—New representatives of the family Vitimotauliidae (Multimodus amplus sp. nov., Purbimodus parvulus sp. nov., Burimodus novus gen. et sp. nov.) and a new species of the family Philopotamidae (Juraphilopotamus callidus sp. nov.) from the Lower Cretaceous of Russia (Republic of Buryatia, Khasurty locality) are described. Keys to of genera of the family Vitimotauliidae and species of genera of
-
Fossil Organisms of the Kotlin Regional Stage of the Upper Vendian of the Northwestern Russian Platform (Leningrad Region) Paleontol. J. (IF 0.5) Pub Date : 2020-08-18 E. Yu. Golubkova; E. A. Kushim; A. B. Tarasenko
AbstractThe environments of the Upper Vendian microscopic and macroscopic fossil organisms of the northwestern Russian Platform were reconstructed, and vertical distribution was analyzed. Five assemblages of the Kotlin age were determined: one impoverished transit assemblage and four abundant ones. A monographic restudy of the following filamentous algae was carried out: Aataenia reticularis Gnilovskaya
-
Brachiopods of the Order Spiriferida at the Devonian–Carboniferous Boundary of Transcaucasia Paleontol. J. (IF 0.5) Pub Date : 2020-08-18 G. A. Afanasjeva
Abstract—A distinct change in the taxonomic and ecological structure of assemblages of brachiopods of the order Spiriferida is observed at the Devonian and Carboniferous boundary of Transcaucasia. Representatives of the superfamily Cyrtospiriferoidea dominated in the assemblages in the Late Devonian, and became extinct by the end of the Devonian, while the Early Carboniferous is dominated by the superfamily
-
On the Dimorph Pair Strenoceras acre/Orthogarantiana humilis (Ammonoidea: Stephanoceratidae) from the Upper Bajocian of the Northern Caucasus Paleontol. J. (IF 0.5) Pub Date : 2020-08-18 V. V. Mitta
AbstractSome ammonites of the subfamily Garantianinae are revised based on the study of new collections from the lower part of the upper Subformation of the Djangura Formation (Upper Bajocian Strenoceras niortense Chronozone, Middle Jurassic) near the village of Krasnogorskaya on the Kuban River (Russia, Karachay-Cherkessia). The dimorph pair Strenoceras acre [m]/Orthogarantiana humilis [M], taxa,
-
Late Cenozoic Ostracods of the Family Ilyocyprididae Kaufmann from the West Siberian Plain Paleontol. J. (IF 0.5) Pub Date : 2020-08-18 V. A. Konovalova
AbstractSiberian representatives of the family Ilyocyprididae are revised based on Neogene–Quaternary ostracod collections assembled by T.A. Kazmina, I.I. Tetetrina, and the author of this article. Ilyocyprididae is represented in the region by two genera, Ilyocypris Brady et Norman, 1889 and Fossilyocypris Schornikov et Krstić, 2004. Species composition and stratigraphic position of 12 taxa of this
-
Bivalve Mollusks from the Lower Berriasian Deposits of the Northern Slope of the Ai-Petri Yaila (Southwestern Crimea) Paleontol. J. (IF 0.5) Pub Date : 2020-08-18 B. T. Yanin
AbstractFive bivalve species (Arcomytilus sanctaecrucis, Neithea valangiensis, Plagiostoma dubisiensis, Prohinnites renevieri, and Protocardia broili sp. nov.) are described from a new locality in Southwestern Crimea. These species, along with the gastropod Phaneroptyxis broili and the foraminifer Bramkampella arabica, indicate the Early Berriasian age of the carbonate deposits examined. The transition
Contents have been reproduced by permission of the publishers.