Mikropaleontologie a rybí fauna podrohovcových vrstev u Litenčic

New fish fauna collected from gas pipe-line excavation in Litenčice Village in Moravia contribute to the completeness of paleoichthyological record described from this area earlier by its oldest part. Mass occurrence of pteropods Limacina sp. allows correlation with „Spiratella horizons“ widely distributed in lower Oligocene of Paratethys. Sediments with the fish fauna were deposited in hypoxic settings and lowered aragonite lyzocline in upper bathyal

Erratum to: Oligoremora rhenana n. g. n. sp., a new echeneid fish (Percomorpha, Echeneoidei) from the Oligocene of the Grube Unterfeld ("Frauenweiler") clay pit

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Lower Badenian deposits on the locality Zaječí hora

Lower Badenian deposits was newly outcropped on the locality Zaječí hora (Brno city). Sedimentological and paleontological study of the succession recognised two facies associations. The lower one was formed by the Lower Badenian clastic deposits known locally as „Brno sands“. The upper one is formed by the Lower Badenian offshore clays known as „Tegel“.  The Neogene beds were covered by Quaternary loess loam.  Lower Badenian succession is interpeted as progradation of the Gilbert-type delta foreset into  relatively deep basin followed by the final flooding of the area by the open sea. The position of the locality close to a steep basin margins was prone to reflect role of local factors influencing the depositional processes and conditions. Lower Badenian deposits was newly outcropped on the locality Zaječí hora (Brno city). Sedimentological and paleontological study of the succession recognised two facies associations. The lower one was formed by the Lower Badenian clastic deposits known locally as „Brno sands“. The upper one is formed by the Lower Badenian offshore clays known as „Tegel“.  The Neogene beds were covered by Quaternary loess loam.  Lower Badenian succession is interpeted as progradation of the Gilbert-type delta foreset into  relatively deep basin followed by the final flooding of the area by the open sea. The position of the locality close to a steep basin margins was prone to reflect role of local factors influencing the depositional processes and conditions.&nbsp

Paleoenvironment during the Lower Badenian along the northern margin of Brno city (the Diviš district)

Lower Badenian sediments were studied on the locality Hvozdíkova at the Diviš district, Brno. There were interpreted 4 lithofacies of Neogene (Lower Badenian) sediments (lithofacies M1, M2, Sl, and SGl). Occurrence of basal Lower Badenian clastics is connected with existence of coarse-grained delta (foreset). Overlying pelites document pelagic sedimentation of open sea. Garnet dominates in assemblage of heavy translucent minerals.Rich assemblages of foraminifers, molluscs, spines of echinoids, ostracods and shark fauna were discovered in sediments. Diversified assemblages are dominated by plankton specimens. Species Orbulina suturalis Brön., Praeorbulina glomerosa circularis (Blow) and Globigerinoides bisphericus Todd. indicate the Lower Badenian age.From the point of view of the shark fauna diversity the locality Hvozdíkova is unique; shark fauna is very rare in Lower Badenian clays, and the genera of Squaliolus and Paraetmopterus are identified for the first time. Oysters – especially species Neopycnodonte navicularis (Brocchi) – dominate in Lower Badenian sediments. Small gastropods (for example Cancellaria sp., ?Tornus sp., Rissoa sp., Alvania sp.) probably represent fossils reworked from shallow littoral area. Lower Badenian sediments were studied on the locality Hvozdíkova at the Diviš district, Brno. There were interpreted 4 lithofacies of Neogene (Lower Badenian) sediments (lithofacies M1, M2, Sl, and SGl). Occurrence of basal Lower Badenian clastics is connected with existence of coarse-grained delta (foreset). Overlying pelites document pelagic sedimentation of open sea. Garnet dominates in assemblage of heavy translucent minerals.Rich assemblages of foraminifers, molluscs, spines of echinoids, ostracods and shark fauna were discovered in sediments. Diversified assemblages are dominated by plankton specimens. Species Orbulina suturalis Brön., Praeorbulina glomerosa circularis (Blow) and Globigerinoides bisphericus Todd. indicate the Lower Badenian age.From the point of view of the shark fauna diversity the locality Hvozdíkova is unique; shark fauna is very rare in Lower Badenian clays, and the genera of Squaliolus and Paraetmopterus are identified for the first time. Oysters – especially species Neopycnodonte navicularis (Brocchi) – dominate in Lower Badenian sediments. Small gastropods (for example Cancellaria sp., ?Tornus sp., Rissoa sp., Alvania sp.) probably represent fossils reworked from shallow littoral area

Faunistické společenstvo kroměřížského souvrství na lokalitě Litenčice (karpatská předhlubeň, střední Morava)

The fossil assemblages of the foraminifers, bryozoans, molluscs, corals, decapods, sharks and teleosteans were analysed from the Litenčice sand pit in the middle part of the Carpathian Foredeep. The section can be assigned to the Karpatian Stage of the Central Paratethys regional stratigraphy (uppermost Lower Miocene) on the basis of species Uvigerina graciliformis Papp et Turn., Lampanyctus carpaticus (Brz.) and Agapilia pachii (Hoern.). Rich and diversified assemblages indicate mainly shallow water marine environment. Foraminifers and molluscs indicate salinity perturbations. Bryozoans and also molluscs document environment with relatively high dynamics and depth of water about 100 m. Foraminifers, fishes and sharks represent deeper water taxa and indicate a possible reworking of shallow-water elements. The studied sands and gravels of the Holešov Member of the Kroměříž Formation are interpreted as sediments of gravitational currents, more precisely dense turbidity currents (high-density turbidity currents) in the sense of Lowe (1982). The deposition environment can probably be placed on the submarine slope of the coarse-grained delta of the Gilbert type (so-called foresets). This study provided evidence of a number of fossil groups that occur at the site

Carboniferous limestone boulder from the Badenian clastics (Carpathian Foredeep, Czech Republic): A useful data source on the Palaeozoic of the Moravosilesian Basin

The lower Badenian basal and marginal clastics of the Carpathian Foredeep represent a useful source of information on the Palaeozoic units of the Moravosilesian Basin (Bohemian Massif). This study addresses in detail a Tournaisian limestone boulder from a locality near Kučerov village. Foraminifers indicate a narrow interval within the Mississippian Foraminifer Zone 8, characterized by the co-occurence of Darjella monilis Malakhova, 1964 and Eoparastaffella ex. gr. vdovenkoae Devuyst & Kalvoda, 2007. Fourteen recorded brachiopod taxa include: markedly predominant chonetidines, represented by Megachonetes zimmermanni (Paeckelmann, 1930) and other rugosochonetids; less frequent strophomenides (Leptagonia M’Coy, 1844) and orthotetides (Pulsiidae, Schuchertellidae); and rather rare spiriferides, athyrides?, orthides and productidines. The brachiopod fauna is generally close to associations known from other European areas. Trilobites are represented by the genus Cummingella Reed, 1942. The specimens recorded do not match the species previously known from the Czech Republic and the morphological features preserved suggest similarity with taxa from other European areas (e.g. Belgium, Poland). The microfacies correspond to floatstone with a packstone/grainstone matrix and contain crinoids, peloids, foraminifers, intraclasts, cortoids, moravamminids, algae and other allochems. Based on microfacies and foraminifer data, the boulder might originate in the limestone succession of the Líšeň Formation in the vicinity of Mokrá or in the limestone olistoliths in the siliciclastic Culm facies. Accordingly, at least some of the dark grey limestone clasts at the studied locality correspond to the Carboniferous and not only to the Devonian as previously assumed