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Ostracods of the genus Glyptocythere Brand & Malz, found in the Kuiavian (= Vesulian) rocks penetrated by the boreholes Jaworznik, Iwanowice Wielkie and Choroń, are described. Two of the five species described - Glyptocythere posterocostata and G. medisulcata - are new. The intraspecific variability and stratigraphical distribution of particular species are discussed.
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Two new Upper Bathonian species : Progonocythere polonica n. sp . and Progonocythere ogrodzieniecensis n, sp. are described from the Clydoniceras discus zone in Ogrodzieniec near Zawiercie, Poland. The ontogeny and development of the hinge in t he successive instars of the species P. polonica n . sp. have been studied. The presence there has been ascertained of a sieve plate closing up the lumen of straight pore canals.
Seven ostracode species are described from the Flysch Carpathians, borehole Trzebunia 2, depts interval 3523.9-3532.5 m. The ostracods are attributed to 3 genera of 2 families. 5 species are new, viz. Fastigatocythere crassicostata, F. posterolata, F. gracilis, F. aculeata and F. robusta.
The taxonomic position of the genus Cardobairdia van den Bold, 1960 and its importance to the systematics of Ostracoda are analyzed. The assignment of Cardobairdia to the order Podocopida Müller, 1894 (within the superfamily Healdiaoea Harlton, 1933) is confirmed. Cardobairdia inflata n.sp. from the Middle Jurassic of Central Poland is described.
A description is given of the Carboniferous ostracods from the borings in North-western Poland. Thirty-four species, including fifteen species and two subspecies considered as new ones, are described and their stratigraphic importance discussed. In the sediments under study, three horizons have been distinguished differing in their ostracods. The first of them may correspond to the Tournaisian, the second to the Viséan, while the third's age has been approximately determined as the Namurian.
Excellently preserved ostracods from large blocks of the late Callovian (Quenstedtoceras lamberti Zone) black clays occurring within glacial drift near Łuków, eastern Poland, are described. Unlike coeval faunas from other localities in Poland, the Łuków ammonite assemblage exhibits boreal affinities. The ostracod fauna broadly resembles those of the British Isles and northwestern Germany, there are also some similarites to Central Russia and northwestern Poland. Seventeen ostracod species are reported, and Schuleridea (Eoschuleridea) lukoviensis sp. n. is proposed. The ostracod assemblage is dominated by large number of specimens of Nophrecythere and Schuleridea (Eoschuleridea). The ostracods are of late Callovian age as indicated by the presence of Nophrecythere triebeli, Progonocythere callovica and advanced evolutionary forms of Nophrecythere intermedia and Terquemula lutzei. The most probable source of the Łuków clay blocks seems to be from the bed of the Baltic Sea north of Gdańsk.
Thirty five Lower Kimmeridgian ostracod species, including 13 new ones, assigned to 9 families, are described. They come from five borings at Strzałków locality (NW border of the Holy Cross Mts.). A subdivision of the Lower Kimmeridgian of this region into 3 ostracod horizons is proposed. The Lower Kimmeridgian ostracod assemblage of this region resembles those of the contemporaneous deposits in Central and Northern France, Southern England, Northwest Germany, Denmark and of the Swiss Jura.
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