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    Wyświetlanie 1-5 z 5
    Tytuł:
    Brachiopods from the Lower Red Formation (Lower Oligocene) of the Isfahan Province, Central Iran
    Autorzy:
    Bitner, Maria Aleksandra
    Bahrami, Ali
    Yazdi, Mehdi
    Zágoršek, Kamil
    Powiązania:
    https://bibliotekanauki.pl/articles/27311288.pdf
    Data publikacji:
    2023
    Wydawca:
    Polskie Towarzystwo Geologiczne
    Tematy:
    Brachiopoda
    new species
    Early Oligocene
    Rupelian
    Lower Red Formation
    Ramsheh section
    Iran
    Opis:
    The study presents the first record of Early Oligocene brachiopods from the Lower Red Formation of the Isfahan Province, Central Iran. The assemblage comprises six brachiopod taxa, belonging to five genera, Novocrania Lee and Brunton, Thecidellina Thomson, Argyrotheca Dall, Joania Álvarez, Brunton and Long, and Platidia Costa. Two species are described as new, Thecidellina persica sp. nov. and Argyrotheca ramshehensis sp. nov. The discovery of Thecidellina in Iran is the first confirmed occurrence of this genus in Oligocene deposits, filling the gap between known Eocene and Miocene occurrences. At the species level, the brachiopods investigated here show no affinity to those from the Lower Miocene Qom Formation.
    Źródło:
    Annales Societatis Geologorum Poloniae; 2023, 93, 4; 411--422
    0208-9068
    Pojawia się w:
    Annales Societatis Geologorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Early Oligocene brachiopods from the rocky-shore deposits at Mammendorf, central Germany
    Autorzy:
    Bitner, Maria Aleksandra
    Müller, Arnold
    Powiązania:
    https://bibliotekanauki.pl/articles/2133937.pdf
    Data publikacji:
    2022
    Wydawca:
    Polskie Towarzystwo Geologiczne
    Tematy:
    Brachiopoda
    Early Oligocene
    Rupelian
    predation
    North Sea Basin
    Opis:
    Thirteen species, belonging to eleven genera, i.e., Discinisca Dall, Novocrania Lee and Brunton, Lacazella Munier-Chalmas, Pliothyrina van Roy, Terebratulina d’Orbigny, Megathiris d’Orbigny, Argyrotheca Dall, Bronnothyris Popiel-Barczyk and Smirnova, Joania Álvarez, Brunton and Long, Platidia Costa and Megerlia King, have been identified in the lower Oligocene rocky-shore deposits at Mammendorf, central Germany. The occurrence of the species Discinisca fallens (Wood), Argyrotheca bitnerae Dulai and Megerlia truncata (Linnaeus) extends their stratigraphic range back to the early Oligocene. The affinity to the early Oligocene brachiopod fauna of the Mainz Basin is noted.
    Źródło:
    Annales Societatis Geologorum Poloniae; 2022, 92, 1; 87--107
    0208-9068
    Pojawia się w:
    Annales Societatis Geologorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Oligocene bivalve faunas from the Silesian Nappe, Polish Outer Carpathians: Evidence for the early history of the Paratethys
    Autorzy:
    Studencka, B.
    Popov, S.
    Bieńkowska-Wasiluk, M.
    Wasiluk, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/2059857.pdf
    Data publikacji:
    2016
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Bivalvia
    Menilite Beds
    Carpathian
    Rupelian
    Solenovian
    Paratethys
    Opis:
    The study is focused on the taxonomic inventory of an intriguing bivalve fauna from the Lower Oligocene Menilite Beds (Dynów Marls) within the Silesian Nappe, Polish Outer Carpathians. Sixteen bivalve species have been identified within the material collected in two small quarries in Jabłonica Polska near Krosno. Stratigraphic and geographic distributions of all recognized species are considered. This assemblage, the first of this kind in Poland and one of three recognized in the Outer Carpathians, shows clear affinities to coeval typical Solenovian faunas from Ukraine to Kazakhstan, with particular comparison made to bivalve faunas from the Menilite Formation (Subchert Member) within the Boryslav-Pokuttya Nappe, Ukrainian Outer Carpathians. Moreover, this study presents an overview of the main aspects and definitions of the date of the Paratethys origin. The main criterion used to define the time of the Paratethys birth is the distinct faunal turnover from the moderately diverse boreal or Tethyan bivalve faunas populating particular basins of the Northern Peri-Tethys in the earliest Oligocene to the uniform, highly endemic fauna inhabiting the newly formed semi-closed basin. This vast inland sea, named Paratethys, was populated by representatives of eight euryhaline bivalve families. They are characterized by extinct Paratethyan genera, such as Bessia Kojumdgieva et Sapungieva, Merklinicardium Popov, Korobkoviella Merklin, Urbnisia Goncharova, Ergenica G. Popov and Janschinella Merklin.
    Źródło:
    Geological Quarterly; 2016, 60, 2; 317--340
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Oligocene crabs (Decapoda: Brachyura) from the Asmari Formation in Yasuj area (SW Iran)
    Autorzy:
    Bahrami, Ali
    Ossó, Alex
    Yazdi, Mehdi
    Ansari, Heshmatollah
    Powiązania:
    https://bibliotekanauki.pl/articles/27323965.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    Paleogene
    Rupelian
    Tethys
    Brachyura
    Palaeocarpilius
    Lophoranina
    paleogen
    rupel
    Tetyda
    krab
    Opis:
    New findings of crustacean decapod brachyurans from the Rupelian period (lower Oligocene) in Iran are presented in this study. In particular, Lophoranina sp. and Palaeocarpilius cf. P. rugifer Stoliczka, 1871, from the Rupelian strata were found in two previously unexplored localities, Abshar and Vezg near Yasuj in the southwestern region of Iran. The discovery contributes to fill the gap in the record of brachyuran decapod crustaceans in Iran during the Eocene and Miocene periods. The presence of both genera in the Oligocene of Iran suggests a certain degree of faunal similarity among brachyurans on both sides of the Tethys Realm.
    Źródło:
    Acta Geologica Polonica; 2023, 73, 2; 189--200
    0001-5709
    Pojawia się w:
    Acta Geologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sedimentary conditions in the Siary zone of the Magura basin (Carpathians) in the late Eocene-early Oligocene
    Warunki sedymentacji w strefie Siar basenu magurskiego (Karpaty) w późnym eocenie-wczesnym oligocenie
    Autorzy:
    Leszczyński, S.
    Malata, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/1205216.pdf
    Data publikacji:
    2002
    Wydawca:
    Polskie Towarzystwo Geologiczne
    Tematy:
    flysch
    Carpathians
    Magura thrust
    Siary zone
    Priabonian
    Rupelian
    sedimentation
    Opis:
    The sediments of the upper Eocene (Priabonian)-lower Oligocene (Rupelian) of the Siary zone in the Magura nappe (basically Magura Beds in glauconitic facies) display features indicating their origination in sedimentary conditions quite different from those in which coeval sediments from the other parts of the Carpathians were deposited. This paper aims at interpreting the sedimentary conditions on the basis of lithofacies, their vertical and lateral distribution, foraminifera assemblages, CaCO3 and organic matter content determined in six transects through the entire Siary zone, the contents of main and trace elements determined in 11 samples from one section and different published data. Lithofacies and the present day shape of the Siary zone suggest sedimentation of the entire succession in a strongly elongated confined basin. Facies distribution indicates deposition on a submarine ramp that gradually expanded to NE and E along the slopes of the outer basin margin. Assemblages of foraminifera suggest location of the basin bottom below the foraminiferal lysocline. Moreover, foraminifera together with bioturbation structures and sediment geochemistry indicate sedimentation mainly in weakly oxic, close to dysoxic bottom waters. The differences in facies in relation to the coeval deposits of the other parts of the Carpathians are interpreted as resulting mainly from intense resedimentation in the Siary zone during the Priabonian-Rupelian, and in part from the relatively low calcium carbonate supply. Gradual expansion of resedimentation towards NE, followed by a decrease in the supply of coarse-grained material is regarded as due to lithosphere rollback beneath the evolving Carpathians. This process is interpreted as of superior significance in controlling se--Rupelian not only in the Siary zone but also in the entire Magura basin. This was the factor responsible for forcing the subsidence of the Magura basin, accretionary wedge development in its inner part, and fore-bulging of the area at some distance in front of the zone of the rolling back lithosphere, i.e. in the source area of the sedimentary succession in question. Finally, this process also caused drowning and burying of the source area.
    Źródło:
    Annales Societatis Geologorum Poloniae; 2002, 72, No 3; 201-239
    0208-9068
    Pojawia się w:
    Annales Societatis Geologorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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