Reconstruction of the multielement apparatus of the earliest Triassic conodont, Hindeodus parvus, using synchrotron radiation X-ray micro-tomography

Sachiko Agematsu, Kentaro Uesugi, Hiroyoshi Sano, Katsuo Sashida

研究成果: ジャーナルへの寄稿記事

7 引用 (Scopus)

抄録

Earliest Triassic natural conodont assemblages preserved as impressions on bedding planes occur in a claystone of the Hashikadani Formation, which is part of the Mino Terrane, a Jurassic accretionary complex in Japan. In this study, the apparatus of Hindeodus parvus (Kozur and Pjatakova, 1976) is reconstructed using synchrotron radiation micro-tomography (SR - μCT). This species has six kinds of elements disposed in 15 positions forming the conodont apparatus. Carminiscaphate, angulate, and makellate forms are settled in pairs in the P1, P2, and M positions, respectively. The single alate element is correlated with the S0 position. The S array is a cluster of eight ramiforms, subdivided into two inner pairs of digyrate S1-2 and two outer pairs of bipennate S3-4 elements. The reconstruction is similar to a well-known ozarkodinid apparatus model. In addition, the μCT images show that the 'anterior' and 'posterior' processes of the S1-2 elements faced the caudal and rostral ends of the living conodont body, respectively.

元の言語英語
ページ(範囲)1220-1227
ページ数8
ジャーナルJournal of Paleontology
91
発行部数6
DOI
出版物ステータス出版済み - 11 2017

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conodont
tomography
Triassic
claystone
bedding plane
terrane
Jurassic
radiation

All Science Journal Classification (ASJC) codes

  • Palaeontology

これを引用

Reconstruction of the multielement apparatus of the earliest Triassic conodont, Hindeodus parvus, using synchrotron radiation X-ray micro-tomography. / Agematsu, Sachiko; Uesugi, Kentaro; Sano, Hiroyoshi; Sashida, Katsuo.

:: Journal of Paleontology, 巻 91, 番号 6, 11.2017, p. 1220-1227.

研究成果: ジャーナルへの寄稿記事

Agematsu, Sachiko ; Uesugi, Kentaro ; Sano, Hiroyoshi ; Sashida, Katsuo. / Reconstruction of the multielement apparatus of the earliest Triassic conodont, Hindeodus parvus, using synchrotron radiation X-ray micro-tomography. :: Journal of Paleontology. 2017 ; 巻 91, 番号 6. pp. 1220-1227.
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