 Subjects -> PALEONTOLOGY (Total: 43 journals)
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- First Record of the Genus Cyrtanaspis Emery (Insecta: Coleoptera:
Scraptiidae) from Baltic Amber-
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Abstract: The false flower beetle Cyrtanaspis kerneggeri Perkovsky et Odnosum sp. nov. is described from Baltic amber. The new species is similar to the extant C. phalerata, from which it differs in the absence of a hair pattern on the elytra and pronotum, in the subsecuriform last palpomere, and the shape of antennomeres; it differs from C. sauteri in the elytral shape.
PubDate: 2022-04-01
- New Blattinopsidae (Insecta: Blattinopsida) from the Middle Permian of
European Russia-
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Abstract: — Glaphyrophlebia vaga sp. nov., G. rara sp. nov., and G. kamaensis sp. nov. (Insecta: Blattinopsida, Blattinopsidae) are described from the Middle Permian locality Tyulkino in European Russia (Ufimian Stage of Perm Region).
PubDate: 2022-04-01
- A New Species of Crassatella (Bivalvia) from the Upper Eocene of Central
Ukraine-
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Abstract: A new bivalve species C. (Crassatella) lassa is described from the Upper Eocene sediments of the village of Luzanivka (Cherkasy Region, Ukraine). It occurred together with valves of 15 bivalve species including Crassatella personata Berezovsky, Crassatina woodi (Koenen), Miocardiopsis praelonga (Giebel), Tivelina deleta (Koenen), Pitar porrecta (Koenen), Circe edwardsi (Koenen), Barbatia rustica (Koenen), and Spondylus tenuispina Sandberger. These species are exclusively found in Upper Eocene sediments, thus indicating a Late Eocene age for sediments with C. lassa.
PubDate: 2022-04-01
- A New Species of Cretapsychops (Insecta: Neuroptera: Psychopsidae) from
the Upper Jurassic of Kazakhstan-
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Abstract: Cretapsychops skywalkeri sp. nov., a new species of the family Psychopsidae (Neuroptera), is described from the Upper Jurassic of Karatau locality (Kazakhstan). This is the first record of Cretapsychops Jepson et al., 2009 from the Mesozoic of Central Asia; before now, this genus was only reported from the Lower Cretaceous of England and the Middle Jurassic of China. The forewings of the new species have a contrasting pattern of dark stripes, which probably served as disruptive coloration, reducing the risk of predation by insectivorous pterosaurs or coelurosaurs.
PubDate: 2022-04-01
- Role of Bacteria in the Accumulation of Cambrian–Ordovician
Phosphate-Bearing Obolus Beds in the North-West of the Russian Plate-
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Abstract: Like many phosphorite deposits in the world, the Baltic Middle Cambrian and Lower Ordovician phosphate-bearing basin owes its origin primarily to microbial activity. Colossal accumulations of valves and detritus of lingulates (phosphate brachiopods, mainly from the orders Lingulida and Acrotretida) are the main sources of phosphate material in this basin. The fossilization of the valves of these brachiopods was based on their early postmortem mineralization, which made the valves resistant to destruction. Bacteria were the drivers of this process. This was followed by transfer, breaking, redeposition, and accumulation of the valves and valve fragments in suitable areas of the sea.
PubDate: 2022-04-01
- Southeastern Europe as the Arena of Vertebrate Evolution in the Late
Miocene-
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Abstract: The paper considers the main features of the late Miocene faunas of terrestrial vertebrates and marine mammals of Southeastern Europe and their general dynamics in connection with landscape and climatic changes. We note that the geographical area corresponding to the modern northwestern and northern Black Sea region with adjacent territories was a territory of intense diversification during the late Miocene. The revealed biogeographic significance of the region is associated with the fact that a border between the forest biome and open and/or semi-open landscapes occurred on this territory in the late Miocene. Accelerated diversification in this transitional (ecotone) zone is supposed to be associated with the fragmentation of species’ geographical ranges under pronounced spatial differentiation of plant associations and a wide representation of mosaic habitats caused by significant climatic fluctuations. We further discuss the general evolutionary potential of peripheral communities, as exemplified by the Hipparion vertebrate faunas of southeastern Europe.
PubDate: 2022-04-01
- A New Radiolarian Family Provisocyntridae fam. nov. from the Late
Paleozoic-
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Abstract: The genus Provisocyntra Nazarov et Ormiston, 1987 is revised and its diagnosis is emended. The features of the simultaneous centrifugal and tangential types of growth of the Provisocyntra test are analyzed. The presence of an internal framework in the form of a microsphere is confirmed. The species composition is expanded to include ten species from the Carboniferous–Middle Permian. Four new species of Early Tournaisian radiolarians from the Volga-Ural Basin are described: Provisocyntra grandis sp. nov., P. kononovae sp. nov., P. magniporosa sp. nov., and P. valminazae sp. nov. A new family Provisocyntridae fam. nov. is established. The diagnosis and composition of the order Spongiata Afanasieva et Amon, 2003 are emended.
PubDate: 2022-04-01
- Review of the Jurassic Weevils of the Genus Belonotaris Arnoldi
(Coleoptera: Nemonychidae) with a Straight Rostrum-
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Abstract: Species of the genus Belonotaris Arnoldi, 1977 with a straight rostrum from the Middle-Upper Jurassic of Kazakhstan and China are revised. Arnoldibelus Legalov, 2009, syn. nov. and Sinoeuglypheus Yu, Davis et Shih, 2019, syn. nov. are synonymized with Belonotaris. The diagnosis of Belonotaris is supplemented, and its family placement is established. A key to B. daohugouensis (Yu, Davis et Shih, 2019), comb. nov., B. gratshevi (Legalov, 2009), and B. rohdendorfi Legalov, 2014 is given. The similarities of the Jurassic weevil faunas from Daohugou, Karatau, Shar-Teg, and Talbragar are discussed. Jurassic Nemonychidae probably developed on Bennettitales and were also associated with gymnosperms of other groups (Cycadales, Ginkgoales, Czekanowskiales, and Coniferales). Species of the genus Belonotaris could be associated with Pterophyllum and other Bennettitales.
PubDate: 2022-04-01
- Distribution of the Genus Dzergalanella Genkina (Equisetopsida) in the
Permian and Triassic of Siberia and Europe-
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Abstract: The genus Dzergalanella Genkina (Equisetopsida) was originally established from Kyrgyzstan. It is widely distributed in Northern Siberia and established in Europe. This genus is characterized by whorled leaves with numerous veins. Currently, in most cases, the surface of high leaf sheaths is interpreted as a stalk and these plants are erroneously referred to Neocalamites and other genera. The author includes the species described earlier as Arthropitys (') prynadae, A. (') tunguskanus, and Dzergalanella taimyrica in the genus Dzergalanella and supplements the diagnosis with information about the anatomical structure of the stem.
PubDate: 2022-04-01
- On the Earliest Parkinsonia (Ammonoidea: Parkinsoniidae) from the Upper
Bajocian (Middle Jurassic) of the Northern Caucasus, Russia-
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Abstract: The first representatives of the genus Parkinsonia previously described from Georgia as P. djanelidzei Kakhadze, 1937 and P. djanelidzei var. dertshiensis Kakhadze, 1937 are revised. P. djanelidzei [M] and P. dertshiensis [m] are described and illustrated. The name P. (Okribites) djanelidzei Kakhadze, 1937 is a junior primary homonym of P. (Parkinsonia) djanelidzei Kakhadze, 1937 and is permanently invalid.
PubDate: 2022-04-01
- New Bivalves of the Genus Myonia (Pholadomyida, Sanguinolitidae) from
Permian Deposits of Northeast Russia-
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Abstract: The paper briefly considers the historical development of the bipolar genus Myonia in the Permian of Northeast Russia. Representatives are commonly dominant in Permian communities. Two new species are described, namely, M. kutygini sp. nov., and M. komiensiformis sp. nov.
PubDate: 2022-04-01
- Late Bajocian and Early Bathonian Ostracods of the Russian Plate. Part I:
Genera Plumhoffia Brand and Aaleniella Plumhoff-
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Abstract: The stratigraphically important ostracod genera Plumhoffia Brand, 1990 (family Cytheruridae) and Aaleniella Plumhoff, 1963 (family Eucytheridae) from the Upper Bajocian and Lower Bathonian of the Volga Region (Sokur Section, Saratov Region) and central Russia (Obval Borehole, Penza Region) are revised, and updated and expanded descriptions are provided. Four species are described. A neotype is designated for Plumhoffia tricostata (Khabarova, 1955); three others: Aaleniella franzi, A. volganica, and A.' ovoidea are described as new. Their distribution along the Sokur reference section of the Upper Bajocian (Michalskii ammonite Zone)–Lower Bathonian (Besnosovi ammonite Zone) of the Volga Region allows development of detailed ostracod-based biostratigraphy and correlation of the sections studied with synchronous deposits of Western Europe.
PubDate: 2022-04-01
- Early Cambrian Palaeoscolecidan Sclerites from the Western Limb of the
Chekurovka Anticline (Siberian Platform)-
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Abstract: A new locality for Lower Cambrian palaeoscolecidan sclerites is described in a section of the western limb of the Chekurovka Anticline. The first finds of palaeoscolecids from the Upper Atdabanian are represented by several sclerites of Wronascolex lubovae (Ivantsov et Wrona, 2004). The Botomian-Toyonian interval is characterized by numerous sclerites of the genus Hadimopanella Gedik, 1977. One species, Hadimopanella luchininae sp. nov., is described as new. Previously known species are illustrated.
PubDate: 2022-04-01
- Foraminifera of the Family Elphidiidae from the Cenozoic of the Far East:
Paleontology, Detailed Stratigraphy, and Paleobiogeography-
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Abstract: Representatives of the foraminiferal family Elphidiidae Galloway, 1933 are widely distributed in the Cenozoic deposits of the Far East, where the main oil-and-gas fields of the region are concentrated. Species of this family are important stratigraphic and correlative markers and are used as index species for local and regional stratigraphic zones and for beds with fauna. Some characteristic species are described taxonomically.
PubDate: 2022-04-01
- New Middle Devonian Conodonts of the Northeast Salair, South of West
Siberia-
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Abstract: New species Belodella salairica sp. nov. and Caudicriodus yolkini sp. nov. are described from stratotype sections of the Middle Devonian Mamontovian and Zarechnian regional substages of the northeastern slope of Salair.
PubDate: 2022-02-01
- The Acretretoid Type of Shell Microstructure in the Genus Kasagittella
(Order Lingulida) from the Upper Devonian of the Volga-Urals Region-
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Abstract: The columnar-lamellar microstructure of Kasagittella sp. (order Lingulida, family Obolidae King, 1846) from the Upper Devonian (Frasnian) of the Ust-Cheremshan structural-facies zone is described for the first time. This microstructure is more typical of the order Acrotretida.
PubDate: 2022-02-01
- Encrusting Bryozoans from the Upper Cretaceous of the Middle Volga Region
and Crimea-
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Abstract: Bryozoans encrusting belemnite rostra from the Upper Cretaceous of the Middle Volga region (environs of Volsk and Shikhany) and Central Crimea (Mount Ak-Kaya) are studied. Since the colonies are poorly preserved, they lack many diagnostic features; therefore, most of the species are listed in open nomenclature. The bryozoans studied are from the Middle Volga region, mainly originate from the Santonian–Maastrichtian, and are represented by the species Cyclostomata gen. et sp. indet. (class Stenolaemata), Herpetopora cf. anglica Lang, Hillmeropora sp., 'Marginaria sp., Pyriporella sp., Tyloporella sp., Rhagasostoma gibbosulum Brydone, and Aechmellina cf. anglica (Brydone) (class Gymnolaemata, order Cheilostomata). Bryozoans from Ak-Kaya come from the Campanian to Maastrichtian and include the species Plagioecia sp. (order Cyclostomata), 'Electra sp., 'Conopeum sp., and Anornithopora sp. (order Cheilostomata). Data on cheilostome bryozoans from Ak-Kaya and on the Santonian–Campanian bryozoan assemblage from the Middle Volga region are presented for the first time. The studied species from both regions belong to genera that are widespread in the Upper Cretaceous of Eurasia and the United States.
PubDate: 2022-02-01
- Damselflies of the Family Kennedyidae (Odonata: Archizygoptera) from the
Middle–Upper Triassic of Kyrgyzstan-
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Abstract: Two new species of Kennedyidae: Kennedya madygensis sp. nov and K. ferganensis sp. nov. are described from the Middle-Upper Triassic deposits of the Dzhayloucho (Madygen) locality in Kyrgyzstan based on new material collected in 2007 and 2009. K. carpenteri Pritykina, 1981 is redescribed and variation in its discoidal area and other vein structures is demonstrated. The structure and transformation of the nodus in Kennedyidae are discussed.
PubDate: 2022-02-01
- Caddisflies (Insecta: Trichoptera, Baissoferidae, Calamoceratidae,
Philopotamidae) from the Lower Cretaceous Locality of Baissa,
Transbaikalia (Russia)-
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Abstract: New taxa of caddisflies, Pardoferus vitimicus gen. et sp. nov., Baissoferus elegans sp. nov. (Baissoferidae), Aniburia hirta gen. et sp. nov. (Calamoceratidae) and Juraphilopotamus heteroclitus sp. nov. (Philopotamidae), are described from the Aptian of Baissa in Transbaikalia. Baissoferus sinitsae is transferred to the genus Pardoferus. A key to species of Baissoferus is provided. The global distribution over time and space of fossil Calamoceratidae is reviewed.
PubDate: 2022-02-01
- Cave Bears (Ursus Spelaeus sensu lato) of the Urals
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Abstract: The paper summarizes results of eighty years of studies of large (Ursus (Spelaearctos) kanivetz Vereshchagin, 1973) and small (Ursus (Spelaearctos) ex gr. savini–rossicus) cave bears in the Urals, including their biology, distribution, occurrence and extinction times, taxonomy and phylogeny, as well as interaction with humans.
PubDate: 2022-02-01
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