Methodological add-ons to a non-destructive, micro-CT-based taxonomic/morphometric analysis of characean remains

• Autorzy: Benyó-Korcsmáros Réka , Gulyás Sándor , Sebők Dániel , Benyó Dániel , Cseh Péter , Sümegi Pál

Identyfikatory

DOI

10.14746/logos.2023.29.2.08

• Języki publikacji: EN

Abstrakty

EN

Ever since its introduction, computed tomography has come a long way. No longer is it merely a method that is used in clinical diagnostics, but it is becoming more and more popular among palaeontologists because it can be used to analyse both external and internal structures of fossil remains, such as small insects, snail shells and plant remains. The present study describes non-destructive analyses of Late Cretaceous and early Holocene charophyte gyrogonites by using the micro-CT technique, from sample preparation (embedding, fixing) to visualisation and assessment of images obtained. In addition to this non-destructive examination, we wished to test whether or not computed tomography could be used to examine the gyrogonites. Our preliminary results have made it clear that the micro-CT technique is worth employing for further research. It has proved possible to visualise the samples in 3D, rotate them, and observe them from different directions. By using the appropriate parameters, we have also been able to observe density differences between parts of characean remains and to study several important defining features of these.

Słowa kluczowe

EN

characeae; computer tomography; gyrogonite

PL

characeae; tomografia komputerowa; gyrogonit

• Wydawca: Uniwersytet im. Adama Mickiewicza. Instytut Geologii
• Czasopismo: Geologos
• Rocznik: 2023
• Tom: Vol. 29, No. 2
• Strony: 69--75
• Opis fizyczny: Bibliogr. 12 poz.

Twórcy

autor

Benyó-Korcsmáros Réka

• University of Szeged, Department of Geology and Paleontology, Egyetem utca 2-6, 6722 Szeged, Hungary

autor

Gulyás Sándor

• University of Szeged, Department of Geology and Paleontology, Egyetem utca 2-6, 6722 Szeged, Hungary

autor

Sebők Dániel

• University of Szeged, Department of Applied and Environmental Chemistry, Interdisciplinary Excellence Centre, Rerrich Béla tér 1, 6720 Szeged, Hungary

autor

Benyó Dániel

• Institute of Plant Biology, Biological Research Centre, Temesvári krt. 62. 6726 Szeged, Hungary

autor

Cseh Péter

• University of Szeged, Department of Geology and Paleontology, Egyetem utca 2-6, 6722 Szeged, Hungary

autor

Sümegi Pál

• University of Szeged, Department of Geology and Paleontology, Egyetem utca 2-6, 6722 Szeged, Hungary

Bibliografia

• Boas, F. E.; Fleischmann, D., 2012. CT artifacts: causes and reduction techniques. Imaging in Medicine 4, 229–240.
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• Haas, J.N., 1994. First identification key for charophyte oospores from central Europe. European Journal of Phycology 29, 227–235.
• Herman, G.T., 2009. Fundamentals of computerized tomography: Image reconstruction from projection. 2nd ed., Springer, 300 pp.
• Hounsfield, G.N., 1973. Computerized transverse axial scanning (tomography). 1. Description of system. British Journal of Radiology 46, 1016–1022.
• Ősi, A., Weishampel, D.B. & Jianu, C.M., 2005. First evidence of azhdarchid pterosaurs from the Late Cretaceous of Hungary. Acta Palaeontologica Polonica 50, 777–787.
• Schneider, C.A., Rasband, W.S. & Eliceiri, K.W., 2012. NIH Image to ImageJ: 25 years of image analysis. Nature Methods 9, 671–675.
• Soulié-Märsche, I. & García, A., 2015. Gyrogonites and oospores, complementary viewpoints to improve the study of the charophytes (Charales). Aquatic Botany 120, 7–17.
• Strotton, M.C., Bodey, A.J., Wanelik, K., Darrow, M.C., Medina, E., Hobbs, C., Rau, C. & Bradbury, E.J., 2018. Optimising complementary soft tissue synchrotron X-ray microtomography for reversibly-stained central nervous system samples. Scientific Reports 8, 12017.
• Sümegi, P., Molnár, D., Sávai, S. & Gulyás, S., 2012. Malacofauna evolution of the Lake Peţea (Püspökfürdő), Oradea region, Romania. Nymphaea, Folia naturae Bihariae 39, 5–29.
• Szabó, M., Kundrata, R., Hoffmannova, J., Németh, T., Bodor, E., Szenti, I., Prosvirov, A.S., Kukovecz, Á. & Ősi, A., 2022. The first mainland European Mesozoic click-beetle (Coleoptera: Elateridae) revealed by X-ray micro-computed tomography scanning of an Upper Cretaceous amber from Hungary. Scientific Reports 12, 24.
• Tafforeau, P., Boistel, R., Boller, E., Bravin, A., Brunet, M., Chaimanee, Y., Cloetens, P., Feist, M., Hoszowska, J., Jaeger, J.-J., Kay, R. F., Lazzari, V., Marivaux, L., Nel, A., Nemoz, C., Thibault, X., Vignaud, P. & Zabler, S., 2006. Applications of X-ray synchrotron microtomography for non-destructive 3D studies of paleontological specimens. Applied Physics A 83, 195–202.

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).