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Taxonomy, ecology and palaeogeographical significance of the genus Euorthisima (Brachiopoda) in the Prague Basin
Bartošová, Kateřina ; Mergl, Michal (advisor) ; Sklenář, Jan (referee)
Taxonomic position of the brachiopod genus Euorthisina HAVLÍ EK 1950 from the Ordovician of the Prague Basin (Czech republic) was subjected to wide discussions and disputes in the past. The genus was first classified within the superfamily Syntrophiiacea (order Pentamerida). Later, a separate family Euorthisinidae by Havlí ek (1977) was defined. At present, the family is assigned to the order Orthida and includes genera Euorthisina HAVLÍ EK, 1950, Lesserorthis BENEDETTO, 2007, Notorthisina HAVLÍ EK & BRANISA, 1980 and Protorthisina BENEDETTO, 2007. In this thesis, a revision of genus Euorthisina HAVLÍ EK 1950 with emphasis on taxonomic classification, palaeoecology and palaeogeographic occurrence of species E. moesta and E. minor described from the Ordovician of the Prague Basin has been made. Klí ová slova: Euorthisina, brachiopoda, Ordovician, Prague Basin, Czech republic.
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Taxonomy, ecology and palaeogeographical significance of the genus Euorthisima (Brachiopoda) in the Prague Basin
Bartošová, Kateřina ; Mergl, Michal (advisor) ; Sklenář, Jan (referee)
Taxonomic position of the brachiopod genus Euorthisina HAVLÍ EK 1950 from the Ordovician of the Prague Basin (Czech republic) was subjected to wide discussions and disputes in the past. The genus was first classified within the superfamily Syntrophiiacea (order Pentamerida). Later, a separate family Euorthisinidae by Havlí ek (1977) was defined. At present, the family is assigned to the order Orthida and includes genera Euorthisina HAVLÍ EK, 1950, Lesserorthis BENEDETTO, 2007, Notorthisina HAVLÍ EK & BRANISA, 1980 and Protorthisina BENEDETTO, 2007. In this thesis, a revision of genus Euorthisina HAVLÍ EK 1950 with emphasis on taxonomic classification, palaeoecology and palaeogeographic occurrence of species E. moesta and E. minor described from the Ordovician of the Prague Basin has been made. Klí ová slova: Euorthisina, brachiopoda, Ordovician, Prague Basin, Czech republic.
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Brachiopoda and polychaeta in Taphocenoses of the Bohemian Cretaceous Basis
Sklenář, Jan ; Košťák, Martin (advisor) ; Michalík, Jozef (referee) ; Vašíček, Zdeněk (referee)
The sesile suspension feeders of Brachiopoda and Polychaeta phyla are relatively well represented in the Bohemian Cretaceous Basin (BCB), and show significant diversity. All three subphyla of Brachiopoda (Linguliformea, Craniiformea and Rhynchonelliformea) are present in the fossil record of the sedimentary basin infill; from Polychaeta, there has hith- erto been evidence of only the Canalipalpata subclass members that created solid, usually carbonatic tubes. In both abundancy and diversity, the most richest associations of fossil brachiopods and polychaets occure in near-shore facies of the Cenomanian to the Lower Turonian, and hemipelagic facies of the Late Turonian age. Prior research, as shows the literature survey given by the author, has been focused mainly on representatives of both groups of near-shore facies origin. The aim of this thesis is to fill in the existing gaps in our understanding of these groups within the BCB. This objective is accomplished in the form of a series of studies (Sklenář & Simon 2009, Vodrážka & al. 2009, Sklenář & al., in press) elaborating the following topics in detail: (A) taxonomy, distribution, morphology, variabil- ity, evolutionary relationships and stratigraphic significance of cancellothyrid brachiopod Gyrosoria abundant in the Middle and particularly in...
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Preventive and remedial conservation methodology for the collection specimens falling within palaeontology and mineralogy endangered by sulphide degradation products
Sklenář, Jan ; Ekrt, Boris ; Sejkora, Jiří ; Kolesar, Peter ; Gazdová, Zuzana ; Malíková, Radana ; Nohejlová, Martina ; Kotlík, Petr ; Novák, Michal ; Ďurovič, Michal ; Říhová Ambrožová, Jana
The methodology is a complex system of procedures involving experimentally verified as well as modified already known methods, completely novel procedures, and their combinations. Many technologies as well as materials are employed for the first time in this field. Modifications of the existing methods bring either effectivity improvements, invasivity reduction or both. This methodology is the very first to cover all phases of the collection material treatment from acquisition to final storage. The methodology structuring follows logical succession of procedures. The theoretical chapter summarizes grounds of the degradation process, materials endangered with sulphide degradation and products of it. Area maps of types of sulphides labelled by process of origin, and a map of high-risk Czech localities are also involved. This introductory chapter is followed by part devoted to methods of field work and early care, suitable preventative collection care, and procedures of the remedial care. A special remedial care chapter for paper-documentation is also involved. This chapter is followed by instrumental methods useful for detection of degradation products and their influence on specimen condition. A separate part focuses on suitable ways of documentation. The safety-hazards chapter closes the methodology. The methodology is equipped with a list of references and flow diagrams helping the user to find the suitable procedure fast and easily. The methodology project was supported by the Ministry of Culture of the Czech Republic under NAKI DF12P01OVV031.
Fulltext: nusl-203643_3 -  PDF
Slides: nusl-203643_1 - PDF; nusl-203643_2 - PDF; nusl-203643_4 - PDF; nusl-203643_5 - PDF; nusl-203643_6 - PDF
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