Three-dimensional imaging of the Jurassic radiolarian Protunuma ? ochiensis Matsuoka : an experimental study using high-resolution X-ray micro-computed tomography

• Autorzy: Ishida N. , Kishimoto N. , Matsuoka A. , Kimoto K. , Kurihara T. , Yoshino T.

Identyfikatory

DOI

10.5604/17313708 .1148661

• Języki publikacji: EN

Abstrakty

EN

To evaluate the utility of high-resolution micro-computed tomography (micro-CT) in observing radiolarian fossils, we examined the skeleton of the Jurassic radiolarian fossil Protunuma ? ochiensis Matsuoka using a micro-CT device. Although this species is a closed Nassellarian with a thick exterior wall, important taxonomic characters on the interior and exterior of the shell were represented almost perfectly in the acquired three-dimensional computer graphic images. These characters include those documented in the original description, such as the height and width of the skeleton, the outline, the number of segments, the pore arrangement and other features. In addition, the structure of the initial spicule of this species was revealed newly. An enlarged plaster radiolarian model printed using the laminated modelling method was useful for detailed observation. Nondestructive omnidirectional observation is an advantage of this method, which is not possible with scanning electron microscopy or optical microscopic investigations. Micro-CT technology would become an effective observational tool for radiolarian studies in the near future.

Słowa kluczowe

EN

three dimensional imaging; X-ray microcomputed tomography; laminated object manufacturing; radiolaria; Protunuma ? ochiensis

• Wydawca: Państwowy Instytut Geologiczny - Państwowy Instytut Badawczy
• Czasopismo: Volumina Jurassica
• Rocznik: 2015
• Tom: Vol. 13, no. 1
• Strony: 77--82
• Opis fizyczny: Bibliogr. 14 poz., rys.

Twórcy

autor

Ishida N.

• Gas Hydrate Research Laboratory, Meiji University, Kanda-Surugadai 1-1, Chiyoda-ku, Tokyo, 101-8301, Japan

autor

Kishimoto N.

• Department of Mechanical Engineering, Faculty of Science and Engineering, Setsunan University, Neyagawa 572-8508, Japan

autor

Matsuoka A.

• Department of Geology, Faculty of Science, Niigata University, Niigata 950-2181, Japan

autor

Kimoto K.

• Research and Development Center for Global Change (RCGC), JAMSTEC, Yokosuka, Kanagawa 237-0061, Japan

autor

Kurihara T.

• Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan

autor

Yoshino T.

• Department of Mechanical Engineering, Faculty of Science and Engineering, Toyo University, Kawagoe, Saitama 350-8585, Japan

Bibliografia

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• 2. ISHIDA N., 2004 - Lithostratigraphy of Mesozoic strata and Late Jurassic radiolarian assemblages in the Southern Chichibu terrane in the Hinohara area, southeastern part of the Kanto Massif, central Japan. News of Osaka Micropaleontologists, Special Volume, 13: 89-109 [in Japanese with English abstract].
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• 4. ISHIDA N., 2015 - Late Middle Jurassic (Callovian) radiolarian assemblages from siliciclastic rocks in the Southern Chichibu Belt, southeast Kanto Mountains, Japan. News of Osaka Micropaleontologists, Special Volume, 15 [in press].
• 5. ISHIDA N., KISHIMOTO N., MATSUOKA A., KURIHARA T., KIMOTO K., YOSHINO T., 2013 - Current status of radiolarian research using Micro-CT technique. Abstract of the 120th meeting of the Geological Society of Japan [in Japanese].
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• 12. YOSHINO T., KIMOTO K., KISHIMOTO N., MATSUOKA A., KURIHARA T., ISHIDA N., MATSUURA S., 2009 - A simple mathematical model for chamber arrangement of planktic foraminifera. FORMA, 24: 87-92.
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