A5043928574- Paleontology and Stratigraphy of Fossils
- Marine Biology and Ecology Research
- Echinoderm biology and ecology
- Geology and Paleoclimatology Research
- Evolution and Paleontology Studies
- Calcium Carbonate Crystallization and Inhibition
- Paleontology and Evolutionary Biology
- Ocean Acidification Effects and Responses
- Methane Hydrates and Related Phenomena
- Marine Bivalve and Aquaculture Studies
- Cephalopods and Marine Biology
- Marine and coastal plant biology
- Geological Formations and Processes Exploration
- Marine and environmental studies
- Marine Biology and Environmental Chemistry
- Ichthyology and Marine Biology
- Botany and Plant Ecology Studies
- Isotope Analysis in Ecology
- Geological and Geophysical Studies
- Turtle Biology and Conservation
- Parasite Biology and Host Interactions
- Integrated Water Resources Management
- Marine animal studies overview
- Archaeological and Geological Studies
- Geology and Environmental Impact Studies
Polish Academy of Sciences
2016-2025
Institute of Paleobiology
2016-2025
University of Silesia in Katowice
2008-2018
Université de Bretagne Occidentale
2018
University of Kansas
2018
Planetary Science Institute
2018
Lebanese University
2018
Prysmian Group (Italy)
2011
It has been argued that increases in predation over geological time should result defensive adaptations prey taxa. Recent situ and laboratory observations indicate cidaroid sea urchins feed on live stalked crinoids, leaving distinct bite marks their skeletal elements. Similar fossil crinoids from Poland strongly suggest these animals have subject to echinoid since the Triassic. Following near-demise during end-Permian extinction, underwent a major evolutionary radiation Middle–Late Triassic...
Sea urchins are a major component of recent marine communities where they exert key role as grazers and benthic predators. However, their impact on past organisms, such crinoids, is hard to infer in the fossil record. Analysis bite mark frequencies crinoid columnals comprehensive genus-level diversity data provide unique insights into importance sea urchin predation through geologic time. These show that over Mesozoic, intensity measured by columnals, changed step with urchins. Moreover,...
The mechanisms that regulate minor and trace element biomineralization in the echinoid skeleton can be primarily controlled biologically ( i.e. , by organism its vital effects) or extrinsic environmental factors. Assessing relative role of those controls is essential for understanding biomineralization, taphonomy, diagenesis, their potential as geochemical archives. In this study, we (1) contrast signatures specimens collected across multiple taxa settings to assess situ effects...
Recent observations indicate that shell fragmentation can be a useful tool in assessing crushing predation marine communities. However, criteria for recognizing breakage caused by durophagous predators versus physical factors are still not well established. Here, we provide data from tumbling and aquarium experiments to argue biotic processes lead different patterns of damage, specifically angular fragments good indicators predation. Using such as proxy, analyze 57 European Paleozoic...
Abstract This paper reports the results of micro‐ to nanostructural and geochemical analyses calcitic skeletons from extant deep‐sea stalked crinoids. Fine‐scale ( SEM , FESEM AFM ) observations show that crinoid skeleton is composed carbonate nanograins, about 20–100 nm in diameter, which are partly separated by what appears be a few thick organic layers. Sub‐micrometre‐scale mapping ossicles using N ano SIMS ion microprobe, combined with synchrotron high‐spatial‐resolution X ‐ray...
Abstract Deuterostomes are a morphologically disparate clade, encompassing the chordates (including vertebrates), hemichordates (the vermiform enteropneusts and colonial tube-dwelling pterobranchs) echinoderms starfish). Although deuterostomes considered monophyletic, inter-relationships between three clades remain highly contentious. Here we report, Yanjiahella biscarpa , bilaterally symmetrical, solitary metazoan from early Cambrian (Fortunian) of China with characteristic echinoderm-like...
Drill holes made by predators in prey shells are widely considered to be the most unambiguous bodies of evidence predator-prey interactions fossil record. However, recognition traces predatory origin from those formed abiotic factors still waits for a rigorous evaluation as prerequisite ascertain predation intensity through geologic time and test macroevolutionary patterns. New experimental data tumbling various extant demonstrate that abrasion may leave strongly resembling produced drilling...
Abstract Shifts in the magnesium to calcium ratio of seawater geological history are thought have profoundly affected biomineralization marine invertebrates, including some echinoderms, which changed their skeletal mineralogy from high-magnesium low-magnesium calcite and vice versa. Here we report on experiments that aimed investigate effect ambient nanomechanical properties spines two echinoid species ( Arbacia lixula Paracentrotus lividus ). We found echinoids cultured with a low produced...
Although most investigations of crinoid-predator interactions have focused on nektonic vertebrates (fishes and sharks), slow-moving benthic animals such as cidaroid echinoids may also interact antagonistically with stalked crinoids. This was recently supported by observations extant isocrinids in modern deep-sea environments near the west end Grand Bahama Island. In this paper, we report stalks crinoids from Late Jurassic south-central Poland, which co-occur remains cidaroids show...
Following the end-Permian biotic crisis which led to near extinction of crinoids, this echinoderm class rebounded rapidly during Mesozoic, resulting in forms with important morphological and behavioural novelties. However, quantitative patterns crinoid diversity Mesozoic remain largely unexplored. Here, we report results analyses evolutionary dynamics post-Palaeozoic genera spanning a time interval between 250 70 Myr. We show that crinoids reached their peak genus-level richness Late...
Owing to their remarkable physical properties, cellular structures, such as triply periodic minimal surfaces (TPMS), have multidisciplinary and multifunctional applications. Although these structures are observed in nature, examples of TPMS with large length scales living organisms exceedingly rare. Recently, microstructure reminiscent the diamond-type was documented skeleton modern knobby starfish Protoreaster nodosus . Here we report a similar microlattice 385 Myr old crinoid Haplocrinites...
Fluorochrome staining is among the most widely used techniques to study growth dynamics of echinoderms. However, it fails detect fine-scale increments because produced marks are commonly diffusely distributed within skeleton. In this paper we investigated potential trace element (manganese) labeling and subsequent cathodoluminescence (CL) imaging in studies Three species sea urchins (Paracentrotus lividus, Echinometra sp. Prionocidaris baculosa) were incubated for different periods time...
Calcite isocrinid ossicles from the Middle Jurassic (Bathonian) clays in Gnaszyn (central Poland) show perfectly pre− served micro− and nanostructural details typical of diagenetically unaltered echinoderm skeleton. Stereom pores are filled with ferroan calcite cements that sealed off skeleton diagenetic fluids prevented structural geochemical alteration. In contrast high−Mg modern, tropical echinoderms, fossil crinoid contain only 5.0–5.3 mole% MgCO3. This low Mg content can be a result...
Dicynodont (Synapsida: Anomodontia) bones from the Late Triassic (late Norian/early Rhaetian) of Poland yield characteristic tooth marks that can be attributed to three ichnotaxa (Linichnus serratus, Knethichnus parallelum and Nihilichnus nihilicus). The general shape dimension these traces perfectly match dental morphology a co-occurring carnivorous dinosaur. It is therefore concluded early dinosaurs were feeding on dicynodonts. This discovery constitutes one oldest evidence dinosaur...
Pleurocystitid rhombiferans are among the most unusual echinoderms whose mode of life has been long debated. These usually interpreted as vagile epibenthic echinoderms, moving over sea bottom by means a flexible stem. Although their habits and posture reasonably well understood, mechanisms that control movement stem highly controversial. Specifically, it is unknown whether flexibility was under muscles or ligamentary mutable collagenous tissues (MCTs). Here, we reconstruct palaeoanatomy two...