Academic Journal
High-energy synchrotron-radiation-based X-ray micro-tomography enables non-destructive and micro-scale palaeohistological assessment of macro-scale fossil dinosaur bones
| العنوان: | High-energy synchrotron-radiation-based X-ray micro-tomography enables non-destructive and micro-scale palaeohistological assessment of macro-scale fossil dinosaur bones |
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| المؤلفون: | Takuya Imai, Soki Hattori, Kentaro Uesugi, Masato Hoshino |
| المصدر: | Journal of Synchrotron Radiation, Vol 30, Iss 3, Pp 627-633 (2023) |
| بيانات النشر: | International Union of Crystallography, 2023. |
| سنة النشر: | 2023 |
| المجموعة: | LCC:Nuclear and particle physics. Atomic energy. Radioactivity LCC:Crystallography |
| مصطلحات موضوعية: | dinosaurs, fossils, synchrotron radiation-based x-ray micro-tomography, virtual palaeohistology, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798, Crystallography, QD901-999 |
| الوصف: | Palaeohistological analysis has numerous applications in understanding the palaeobiology of extinct dinosaurs. Recent developments of synchrotron-radiation-based X-ray micro-tomography (SXMT) have allowed the non-destructive assessment of palaeohistological features in fossil skeletons. Yet, the application of the technique has been limited to specimens on the millimetre to micrometre scale because its high-resolution capacity has been obtained at the expense of a small field of view and low X-ray energy. Here, SXMT analyses of dinosaur bones with widths measuring ∼3 cm under a voxel size of ∼4 µm at beamline BL28B2 at SPring-8 (Hyogo, Japan) are reported, and the advantages of virtual-palaeohistological analyses with large field of view and high X-ray energy are explored. The analyses provide virtual thin-sections visualizing palaeohistological features comparable with those obtained by traditional palaeohistology. Namely, vascular canals, secondary osteons and lines of arrested growth are visible in the tomography images, while osteocyte lacunae are unobservable due to their micrometre-scale diameter. Virtual palaeohistology at BL28B2 is advantageous in being non-destructive, allowing multiple sampling within and across skeletal elements to exhaustively test the skeletal maturity of an animal. Continued SXMT experiments at SPring-8 should facilitate the development of SXMT experimental procedures and aid in understanding the paleobiology of extinct dinosaurs. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1600-5775 16005775 |
| Relation: | http://scripts.iucr.org/cgi-bin/paper?S1600577523001790; https://doaj.org/toc/1600-5775 |
| DOI: | 10.1107/S1600577523001790 |
| URL الوصول: | https://doaj.org/article/647e95073e054eed8d2565fc2ca29696 |
| رقم الانضمام: | edsdoj.647e95073e054eed8d2565fc2ca29696 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 16005775 |
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| DOI: | 10.1107/S1600577523001790 |