A5029967669- Paleontology and Stratigraphy of Fossils
- Evolution and Paleontology Studies
- Geology and Paleoclimatology Research
- Catalytic Processes in Materials Science
- Paleontology and Evolutionary Biology
- Catalysis and Oxidation Reactions
- Marine and environmental studies
- Catalysts for Methane Reforming
- Geological Studies and Exploration
- Mollusks and Parasites Studies
- Plant Diversity and Evolution
- Geological Formations and Processes Exploration
- Marine Biology and Ecology Research
- Catalysis and Hydrodesulfurization Studies
- Carbon Dioxide Capture Technologies
- Botany and Plant Ecology Studies
- Phase Equilibria and Thermodynamics
- Transition Metal Oxide Nanomaterials
- Hydrocarbon exploration and reservoir analysis
- Study of Mite Species
- Geological formations and processes
- Diatoms and Algae Research
- Magnetic and Electromagnetic Effects
- Insect and Arachnid Ecology and Behavior
- Collembola Taxonomy and Ecology Studies
Institute of Paleobiology
2013-2025
Polish Academy of Sciences
2006-2023
Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences
2003-2012
University of Portsmouth
2009
Gothograptid retiolitines were distinctive in being one of the very few graptolite groups to thrive through late Wenlock extinction event that killed off most graptoloid species, and their construction may have been a factor this success amid environmental adversity. New rich material from two localities Poland five Lithuania contains Gothograptus nassa, obtectus four new species. The detailed morphology reconstruction tubarium shows its specific features, different other lundgreni Biozone...
Gothograptus? meganassa Rickards & Palmer, 2002 is assigned to a new genus Semigothograptus. New, well preserved material from the dubius/nassa Biozone (upper Homerian, Silurian) of Bartoszyce IG-1 drill core Poland described. This provides phylogenetic perspective on evolution post-lundgreni Event retiolitines. Semigothograptus considered be descendant Gothograptus nassa, although one most significant differences between these forms position nema, and narrow finite tubarium ending in an...
Abstract A shoreline to deep basin correlation chart for the middle Silurian coupled extinction-stable isotopic event is presented. The a first attempt synthesise new stratigraphic, faunal and stable data, as well diversity changes among organic-walled microplankton (acritarchs), from Grötlingbo-1 Hunninge-1 cores on Gotland (Sweden), along with previously published data Bartoszyce IG 1 core (Poland), Gräfenwarth section (Germany), Ruhnu (500) Ohesaare (Estonia). Accordingly, relative timing...
Several physicochemical properties of chicken egg white lysozyme (LSZ) in electrolyte solutions were determined. The hydrodynamic diameter LSZ at an ionic strength 0.15 M was found to be 4.0 nm. Using the determined parameters, number uncompensated (electrokinetic) charges, Nc, on molecule surface calculated from electrophoretic mobility data. It that Nc = 2.8 pH 3.0 and I M. At lower strength, 1 × 10–3 M, this positive charge increased 5.6 a characteristics supplemented by dynamic viscosity...
An erratic chert pebble discovered on an exposure of the Lowestoft Till (Anglian Stage, Pleistocene) North Lopham, Norfolk, UK, contains three-dimensionally preserved, silicified graptolites in a mode preservation not known UK. The are Monograptus parapriodon , priodon Monoclimacis linnarssoni and undetermined retiolitid, that indicate Oktavites spiralis Biozone (mid-late Telychian, Late Llandovery, Silurian) age. associated with organic-walled microfossils, some containing internal bodies....
Reduction of copper oxide in the CuO/ZnO/ZrO2 system, which is an precursor catalysts active synthesis methanol from CO2 and H2, was investigated. Preparations with varying CuO contents were obtained by co-precipitation or complexing components citric acid; also modifying additives (MgO, MnO) introduced. The prepared materials characterised determining their surface area (BET), Cu using method reactive adsorption N2O, size crystallites XRD line broadening, composition XPS, kinetics reduction...
Abstract The lundgreni Extinction Event (LEE) in Arctic Canada, as other regions globally, exhibited an apparently abrupt and catastrophic reduction of graptolite radiolarian taxa, followed by a short period extremely low diversity, the dubius-nassa Biozone, subsequent praedeubeli-deubeli Biochron rapid evolutionary diversification new taxa. extinction event was very close to, or coincided with, regression, well with moderately strong positive δ13Corganic excursion. excursion is bifurcated...
The paper focuses on patterns of the evolution simplest and longest-ranging (approximately 18 Ma) Silurian graptolite Pristiograptus dubius.The dubius species group consists P. stem lineage represented by a sequence number subspecies displaying only small morphological changes as well derivative produced from means iterative speciation.This long raging is one, apart one retiolitid, which survived most severe environmental event for graptolites, Cyrtograptus lundgreni Event.Based...
Abstract An exceptional fauna of retiolitine graptolites from Aeronian and lowermost Telychian strata in Arctic Canada provides significant new insights into the phylogeny history diversity graptolites. All specimens were isolated by dissolution calcite concretions. The results indicate that retiolitines emerged within lower reached a higher than expected level disparity forms mid-Aeronian time. uppermost is almost totally devoid preserved and, therefore, our material few morphology or...
The Všeradice section was trenched and continuously sampled for graptolites from the base of post-extinction upper Homerian strata to low in Ludlow. is divisible into three biozones, a lower parvus–nassa Biozone, middle praedeubeli–deubeli an ludensis–gerhardi last named being succeeded by lowest Ludlow nilssoni Biozone. graptolite diversity nine species part Biozone highest world. Five monograptid species, Pristiograptus parvus Ulst, 1974, P. dubius (Suess, 1851), Colonograptus deubeli...
An extraordinarily well-preserved upper Homerian (uppermost Wenlock) post-extinction (post-lundgreni Event) graptolite fauna is described from Arctic Canada. The of dendroids, retiolitids and monograptids, predominantly uncompressed isolated material, demonstrates almost totally new morphological features in comparison with the pre-extinction fauna. two species lowest are followed by a rapid proliferation middle part interval, resulting maximum diversity, 21 species, for entire Homerian....
One new species of retiolitid, Gothograptus storchi, five monograptids (Monograptus patulus, Monograptus glutiformis, Streptograptus galeus, Testograptus cubitus, and Monoclimacis capillus), one cyrtograptid, Cyrtograptus palmatus, are described from the lower Homerian lundgreni Biozone Arctic Canada. The presence a in Canada is documented for first time. Further, full-relief specimens multiramis Törnquist? C.? urbaneki Teller described. Better more completely preserved, isolated material...