Results 151 to 160 of about 2,509 (209)

Early Maastrichtian cheilostome bryozoans from the middle Volga River region

PalZ, 2020
Eight species in six genera of cheilostome bryozoans are described from an early Maastrichtian outcrop located in the Saratov Region, middle Volga River region, southern Russia. The studied bryozoan assemblage includes a new species, Cheethamia volgaensis sp.
Anna V. Koromyslova, Vladimir B. Seltser
openaire   +2 more sources

Palinostratigraphy and Paleoenvironments in the Gorodishchi Section (Middle Volga River Region, Kimmeridgian–Hauterivian)

Russian Geology and Geophysics, 2021
Abstract —Eight dinocyst-based and three spore- and pollen-based biostratigraphic units are defined in the Kimmeridgian, Volgian, and Hauterivian of the Gorodishchi section, based on a biostratigraphic analysis of the successions of marine and terrestrial palynomorphs.
E. Pestchevitskaya
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The first record of calcareous dinoflagellate cysts from the Upper Cretaceous of the Volga River Region

Doklady Biological Sciences, 2016
The taxonomic position of the microproblematics previously considered to be Foraminifera or Calcisphaerulidae is established. The first record from Russia of calcareous cysts of Dinoflagellata is presented. The microfossils originate from the Maastrichtian siliceous clay of the Volga River Region.
V. Vishnevskaya
openaire   +3 more sources

The parasite community of gobiid fishes (Actinopterygii: Gobiidae) from the Lower Volga River region

Biologia, 2015
The parasitic fauna in the lower Volga River basin was investigated for four gobiid species: the nonindigenous monkey goby Neogobius fluviatilis (Pallas, 1814), the round goby N. melanostomus (Pallas, 1814), the Caspian bighead goby Ponticola gorlap (Iljin, 1949), and the tubenose goby Proterorhinus cf. semipellucidus (Kessler, 1877).
Yuriy Kvach, Vasily Boldyrev, Rachel Lohner, Carol A. Stepien   +3 more
openaire   +2 more sources

POND REARING OF PADDLEFISH UNDERYEARLINGS IN STURGEON POLYCULTURE IN THE LOWER VOLGA RIVER REGION

STATE AND DEVELOPMENT PROSPECTS OF AGRIBUSINESS. In the frame of the XXIII Agribusiness Forum of the South of Russia and the Exhibition «Interagromash» Volume 1, 2020
The cultivation of paddlefish underyearlings in polyculture with sturgeons (hybrid bester) in fish ponds was studied. The hydrochemical and hydrobiological parameters in ponds during the cultivation were investigated. A comparative assessment of the growth rates of paddlefish and bester underyearlings during one and two cycles pond cultivation has been
L.M Vasilyeva, Mahmud Elnakib, N.V. Sudakova, A.Z. Anokhina   +3 more
openaire   +2 more sources

Isotope Stratigraphy of the Permian Rocks, the Volga River Region

2017
In this investigation the 87Sr/86Sr values were considered for the Upper Kazanian regional section Pechishchi and accompanied sections of the Lower Kazanian substage and also the Lower Permian formation. The section Pechishchi is known as reference section formed within the Kazanian palaeosea.
N. G. Nurgalieva, B. I. Gareev, D. K. Nurgaliev   +2 more
openaire   +2 more sources

Early cretaceous gastropods of the Middle-Lower Volga river region from P.A. Gerasimov’s collection

Paleontological Journal, 2009
Based on the studying of gastropods collected by P.A. Gerasimov from the Cretaceous beds of the Volga region, four new species are established: Avellana hauteriviensis sp. nov. from the Upper Hauterivian of the Ulyanovsk region, “Palaeorissoina” sokolovensis sp. nov., O. sinzowi sp. nov., and Nerineopsis turritum sp. nov.
M. A. Golovinova, A. V. Guzhov
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Regional Features of Geomorphological Objects of Environmental Tourism in the Volga River Basin in Volgograd

Tourism law and economics
Based on the spatio-temporal approach, the regional features of the relief of the Volgograd Volga region as an important recreational object from the position of its attractiveness are considered and the results of ecological and tourism activities of natural parks of the territory under consideration are presented.
Nadezhda P. Dyachenko, Alla F. Baranova
openaire   +2 more sources

Uppermost Turonian bryozoans from the Lower Volga River region: scanning electron microscopy and micro-computed tomography studies

Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen, 2022
Anna V. Koromyslova, Evgeniy M. Pervushov   +1 more
openaire   +2 more sources

A Hazard Assessment of Settlements and Historical Places in the Upper Volga River Region, Russia

2005
The problem of natural hazard to historical places has received a great deal of attention from the world community in recent years. This issue has been discussed at international meetings such as the International Congress on Engineering Geology in Canada (1998) and the UNESCO Conference in Paris (1999).
Yuri A. Mamaev, Ivan B. Gratchev, Dmitri A. Vankov   +2 more
openaire   +2 more sources