Wszystkie pola: dinosaur traces - Katalog OPAC zbiorów

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Tytuł:: Wędrówka geologiczna po południowo-zachodnim wybrzeżu Portugalii
Geological peregrination in the south-west coast of Portugal
Autorzy:: Poborska-Młynarska, Katarzyna
Powiązania:: https://bibliotekanauki.pl/articles/2076007.pdf
Data publikacji:: 2020
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: Portugalia
stanowiska geologiczne
basen luzytański
basen Algarve
ślady dinozaurów
diapiry z soli jurajskiej
sól fizjologiczna
Portugal
geological sites
Lusitian Basin
Algarve Basin
dinosaur traces
Jurassic salt diapires
salines
Opis:: Portugal as a country of outstanding geological interest was the goal of a scientific expedition of the Polish Salt Mining Association in September 2019. The paper presents the outline of the geology of Portugal, especially the Lusitanian and Algarve sedimentary basins, and the main geological sites along the route of the expedition, i.e. sites documenting stratigraphy and tectonics of the Mesozoic and Cenozoic formations on the central-western and southern Atlantic coast, sites related to the occurrence of salt diapirs and salt tectonics, salines and monuments of nature with preserved dinosaur footprints. Moreover, as Portugal is a country of high seismic activity, the history of the largest earthquake in historical times in the Lower Tagus Valley is presented.
Źródło:: Przegląd Geologiczny; 2020, 68, 10; 751--757
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Healed or non-healed? Computed tomography (CT) visualisation of morphology of bite trace ichnotaxa on a dinosaur bone
Autorzy:: Jacobsen, A. R.
Lauridsen, H.
Fiirgaard, B.
Boel, L. W. T.
Hansen, K.
Powiązania:: https://bibliotekanauki.pl/articles/191178.pdf
Data publikacji:: 2015
Wydawca:: Polskie Towarzystwo Geologiczne
Tematy:: Bite traces
dinosaur bone
theropod
CT
computed tomography
stereomicroscopy
Opis:: Bite traces on fossilised bones can provide important information on predator-prey relations and interactions in ancient environments. In 2009, two new ichnotaxa, Linichnus serratus and Knethichnus parallelum, were introduced to develop the application of bite traces as an ichnological tool. Ichnotaxa defined by theropod bite traces can provide useful information for understanding feeding behaviour. However, objective interpretation of possible bite traces can be difficult using traditional visual inspection. In this study, the bite traces on a fossilised dinosaur bone were comprehensively examined by correlating traditional naked-eye in spection with computed tomography (CT) imaging, used to visualise the internal morphology of the bite traces and in particular, to clarify the appearance of one possibly healed bite trace. A forensic pathologist visually examined the bone with the aid of stereomicroscopy and a radiologist analysed the CT scans. Sixteen different scanner settings were used to optimise the CT parameters and avoid signal at tenuation, in the form of hypointense artefacts in the central trabeculated part of the bone fragment. The use of CT scanning provided information on internal morphology from the vicinity of the bite trace, including hyperdense zones, not identified using visual inspection alone. By applying the extended CT scale, the dense and radiopaque cortical bone layer could be clearly identified and applied as a pathomorphological marker to correctly distinguish non-healed from healed wounds. In conclusion, the authors demonstrate that external visual examination of trace fossils by ichnologists in combination with interior examination using CT imaging can be applied to characterise ichnotaxa defined by bite traces and potentially provide clues on ancient feeding behaviour.
Źródło:: Annales Societatis Geologorum Poloniae; 2015, 85, 3; 457-464
0208-9068
Pojawia się w:: Annales Societatis Geologorum Poloniae
Dostawca treści:: Biblioteka Nauki

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