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Semiquantitative study of the fossil association of the Dobrotivá Formation (Ordovician, Prague Basin) in Ejpovice
Luptáková, Monika ; Kraft, Petr (advisor) ; Mergl, Michal (referee)
The master thesis is focused on the semiquantitative study of the fossil association of the stratigraphically lowest layer No. 3 from the channel sample from the Ejpovice locality, where in the southern bank of the flooded quarry, the Dobrotivá Formation of the Ordovician of the Prague Basin is exposed in the thickness of several meters. The thesis briefly summarizes basic knowledge about the fossil associations of the Dobrotivá Formation, its lithology, stratigraphy and previous paleontological research at studied locality. Paleoecology of the fauna recorded in studied material is described. The main part of the thesis is focused on the taphonomy and associations of the fossils recorded in studied material. In the final part of the thesis, the overall fossil association is characterized depending on the paleoecology and taphonomy of preserved fossils, and the model of the paleoenvironment at the Ejpovice locality is discussed. Based on the lithology and studied fossil associations, it is assumed that a dysoxic environment with episodic currents prevailed in the Ejpovice locality. The fauna is species-depleted and taxa typical of the Dobrotivá Formation are rare. The fauna is mainly allochtonous and most of the organisms are considered as postmortal accumulations in this study. Key words:...
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Fossil associations of the Dobrotivá Formation
Luptáková, Monika ; Kraft, Petr (advisor) ; Mergl, Michal (referee)
The bachelor thesis is focused on the overview about a fundamental knowledge on the fossil associations of the Dobrotivá Formation. This unit represents a distinct level of the Prague Basin volcano-sedimentary infill formed during the boundary interval of the Middle and Upper Ordovician. Its main part is composed of the acquired and published data in the wider context of the neighboring paleocontinents and areas of peri-Gondwana. The thesis briefly describes the development of the Prague Basin and its paleogeography. It summarizes the lithology of the Dobrotivá Formation, its stratigraphic classification and the recently published knowledge on faunal associations in the Dobrotivá Formation, including their paleobiogeography and paleoecology. The bachelor thesis is considered to be a basis for further study of the Dobrotivá Formation. Key words: Ordovician, Prague Basin, assemblages, localities, stratigraphy, paleobiogeography
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