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Early Devonian Foraminifera of the Barrandian area
Vaněčková, Anna ; Holcová, Katarína (advisor) ; Tonarová, Petra (referee)
The first part is devoted to basic information on systematics, general biology of foraminifera, morphology of their tests which is important for taxonomy and also on ecology. The following section relates to characteristic of the Devonian, with the emphasis on the Barrandian area and its stratigraphy plus characteristic of the Na Stydlých vodách quarry where samples were taken for the purpose of this thesis. In the last part, results of the Early Devonian foraminifera of the Barrandian area research are compared with similar studies conducted abroad.
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Early Devonian Foraminifera from the Prague Formation
Vaněčková, Anna ; Holcová, Katarína (advisor) ; Tonarová, Petra (referee)
Lower Devonian foraminifera are known from only a few localities globally and thus are not much investigated. The taxonomy, as well as further use of this group is insufficiently known. One of the main areas of research of foraminifera is the Barrandian area in the Czech Republic. This thesis follows previous studies of this territory but focuses particulary on the Prag formation, which has proven to be rich in foraminifera communities. Taxonomic studies were conducted at two Lower Devonian sites, namely the Na Stydlých vodách quarry and the Požáry quarry. The study showed that foraminifera communities described from the Na Stydlých vodách quarry were dominated by the following genera: Hyperammina, Colonammina and Tolypammina. The highest abundance was recorded at the transition of dvorecko-prokopské limestones and řeporyje limestones and in dvorecko-prokopské limestones. At the Požáry quarry, the communities were dominated by tubular genera of Tolypammina, Hyperammina and Bathysiphon and spherical genera of Lagenammina and Colonammina. The abbundance of Colonammina is unusually high, the genus has been described rarely from other parts of the world so far.
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SCF in Lower Palaeozoic sediments of the Barrandian area
Kovář, Vojtěch ; Fatka, Oldřich (advisor) ; Brocke, Rainer (referee)
1 Abstract In recent years, the term small carbonaceous fossils (SCFs) has been established to accomodate fragile organic-walled fossils of micro- to mesoscopic size that are usually extracted by means of the 'low-manipulation HF extraction' method. This method has so far only been utilized by several authors and no reports have been published on the usage of the method on samples from the Barrandian area. To test the applicability of the method, samples from the Barrandian area were processed. The samples came from eleven localities representing six stratigraphic units (Paseky Shale, Jince Formation, Letná Formation, Kosov Formation, Daleje Shale and Roblín Member). All the units have been studied before by 'standard' methods of palynological processing. Various previously unreported fossils are described, including wiwaxiid sclerites, putative chaetognath remains and acritarch clusters. Furthermore, it is discovered, that the 'low-manipulation HF extraction' can also be used for extraction of originally calcareous fossils. The pilot study provides a further proof that the 'low-manipulation HF extraction' is a useful tool with the potential to significantly expand our knowledge of fossil assemblages. Key words: Small carbonaceous fossils, Cambrian, Ordovician, Devonian, Barrandian area
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Irone ores from the Krušná hora (hill)
Nič, Martin ; Marek, Jaroslav (advisor) ; Čáp, Pavel (referee)
Krušná Hora near Nový Jáchymov belongs in Barrandian area to one of the most important localities with the occurrence of Ordovician sedimentary iron ores. Rich reserves of iron ore and easy access to this area was known and used since many centuries ago. Use of deposits laid the foundation for the rich history of mining and metallurgy in Křivoklátsko. The work is divided into two thematic parts. The geological section is devoted to the construction of tectonic bearings, its stratigraphy, mineralogy, petrology, lithology and paleontological finds. Briefly describes the development of this sedimentation area. Self-described history of the geological survey. The history of the use of bearings is described in the second part, which is divided according to individual companies engaged in mining there. Particular attention is paid especially to companies conducting mining during the 20th century. Self-described termination of mining and mine disposal. Attention is paid to the technical equipment of the mine and the current state of the remains of the mining activities.
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Review of phyllocarid crustacenas of the Barrandian area
Šilinger, Matěj ; Fatka, Oldřich (advisor) ; Budil, Petr (referee)
The thesis summarizes the actual knowledge about classification and stratigraphic distribution of phyllocarid crustaceans in Ordovician to Devonian sediments of the Barrandian area. The thesis includes revision of systematic position and classification of individual taxa, mainly on the basis of data and observations published outside of the Czech Republic. The photographic documentation of selected specimens housed in institutional collections is newly provided.
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Eocrinoid echinoderms from mid-Cambrian of the Barrandian area
Nohejlová, Martina
This thesis deals with the topic of eocrinoid echinoderms from the Barrandian area (Příbram- Jince Basin, mid-Cambrian, Drumian). The thesis is presented as a compilation of five published papers and an introduction. The introduction is an overview of current knowledge about eocrinoid echinoderms. It also includes links to new information from the five included papers, and serves as a unifying element for these professional publications. The topic of the thesis is focused on a revision of selected specimens of eocrinoid echinoderms, and the study of their ontogeny, phylogeny, palaeoecology and systematic position. This thesis has also improved our understanding of early evolution of basal blastozoans. This is the first study of Cambrian ontogenetic development on eocrinoid material from the Czech Republic. Complete ontogeny was described on the genus Akadocrinus, and it was possible to establish two basic phases in the development of this genus: pre-epispire-bearing phase and epispire-bearing phase. The new primitive blastozoan Felbabkacystis is described from the Jince Formation - its unique body plan highlights evolution of the body wall among blastozoans. Palaeoecology and phylogeny of the genus Vyscystis was studied, and phylogenetic analysis suggests a basal position of lepidocystoids among...
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SCF in Lower Palaeozoic sediments of the Barrandian area
Kovář, Vojtěch ; Fatka, Oldřich (advisor) ; Brocke, Rainer (referee)
1 Abstract In recent years, the term small carbonaceous fossils (SCFs) has been established to accomodate fragile organic-walled fossils of micro- to mesoscopic size that are usually extracted by means of the 'low-manipulation HF extraction' method. This method has so far only been utilized by several authors and no reports have been published on the usage of the method on samples from the Barrandian area. To test the applicability of the method, samples from the Barrandian area were processed. The samples came from eleven localities representing six stratigraphic units (Paseky Shale, Jince Formation, Letná Formation, Kosov Formation, Daleje Shale and Roblín Member). All the units have been studied before by 'standard' methods of palynological processing. Various previously unreported fossils are described, including wiwaxiid sclerites, putative chaetognath remains and acritarch clusters. Furthermore, it is discovered, that the 'low-manipulation HF extraction' can also be used for extraction of originally calcareous fossils. The pilot study provides a further proof that the 'low-manipulation HF extraction' is a useful tool with the potential to significantly expand our knowledge of fossil assemblages. Key words: Small carbonaceous fossils, Cambrian, Ordovician, Devonian, Barrandian area
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Eocrinoid echinoderms from mid-Cambrian of the Barrandian area
Nohejlová, Martina
This thesis deals with the topic of eocrinoid echinoderms from the Barrandian area (Příbram- Jince Basin, mid-Cambrian, Drumian). The thesis is presented as a compilation of five published papers and an introduction. The introduction is an overview of current knowledge about eocrinoid echinoderms. It also includes links to new information from the five included papers, and serves as a unifying element for these professional publications. The topic of the thesis is focused on a revision of selected specimens of eocrinoid echinoderms, and the study of their ontogeny, phylogeny, palaeoecology and systematic position. This thesis has also improved our understanding of early evolution of basal blastozoans. This is the first study of Cambrian ontogenetic development on eocrinoid material from the Czech Republic. Complete ontogeny was described on the genus Akadocrinus, and it was possible to establish two basic phases in the development of this genus: pre-epispire-bearing phase and epispire-bearing phase. The new primitive blastozoan Felbabkacystis is described from the Jince Formation - its unique body plan highlights evolution of the body wall among blastozoans. Palaeoecology and phylogeny of the genus Vyscystis was studied, and phylogenetic analysis suggests a basal position of lepidocystoids among...
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Eocrinoid echinoderms from mid-Cambrian of the Barrandian area
Nohejlová, Martina ; Fatka, Oldřich (advisor) ; Mergl, Michal (referee) ; Valent, Martin (referee)
This thesis deals with the topic of eocrinoid echinoderms from the Barrandian area (Příbram- Jince Basin, mid-Cambrian, Drumian). The thesis is presented as a compilation of five published papers and an introduction. The introduction is an overview of current knowledge about eocrinoid echinoderms. It also includes links to new information from the five included papers, and serves as a unifying element for these professional publications. The topic of the thesis is focused on a revision of selected specimens of eocrinoid echinoderms, and the study of their ontogeny, phylogeny, palaeoecology and systematic position. This thesis has also improved our understanding of early evolution of basal blastozoans. This is the first study of Cambrian ontogenetic development on eocrinoid material from the Czech Republic. Complete ontogeny was described on the genus Akadocrinus, and it was possible to establish two basic phases in the development of this genus: pre-epispire-bearing phase and epispire-bearing phase. The new primitive blastozoan Felbabkacystis is described from the Jince Formation - its unique body plan highlights evolution of the body wall among blastozoans. Palaeoecology and phylogeny of the genus Vyscystis was studied, and phylogenetic analysis suggests a basal position of lepidocystoids among...
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