The Early Cretaceous paleobiogeography of belemnites in the Pacific
Project/Area Number |
23840002
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Research Category |
Grant-in-Aid for Research Activity Start-up
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Allocation Type | Single-year Grants |
Research Field |
Stratigraphy/Paleontology
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Research Institution | Hokkaido University (2012) Hokkaido University of Education (2011) |
Principal Investigator |
IBA Yasuhiro 北海道大学, 大学院・理学研究院, 助教 (80610451)
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Project Period (FY) |
2011 – 2012
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Project Status |
Completed (Fiscal Year 2012)
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Budget Amount *help |
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2012: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2011: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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Keywords | 白亜紀 / 古生物地理 / 頭足類 / 層位・古生物学 / 古生物地理学 / 絶滅頭足類 / 古環境 / 古生物学 / 生物地理学 / 古海洋学 |
Research Abstract |
Belemnites, an extinct group of cephalopods, flourished in Mesozoic oceans. The rich and continuous fossil record of belemnites offers the potential for understanding the evolutionary dynamics of nektonic biota and its environmental factors. This study reveals two major biogeographic changes in the Early Cretaceous belemnites in the Pacific; 1) Occurrence of pandemic distribution of Tethyan-type belemnites, which can be correlated with the beginning of the Mid-Cretaceous global warming, and 2) An enigmatic distribution pattern of the Barremian belemnite in the NW and NE Pacific,indicating an existence of the “Cretaceous North Pacific Gyre”.
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Report
(3 results)
Research Products
(27 results)
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[Journal Article] First record of Immanitas (Bivalvia, Hippuritida) from northern California, USA.2013
Author(s)
Sano, S., Iba, Y., Skelton, P.W., Aguilar-Perez, J., Tanabe, K.
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Journal Title
Caribbean Journal of Earth Sciences
Volume: 45巻
Pages: 7-84
Related Report
Peer Reviewed
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[Journal Article] First record of an Ea rly Barremian caprinid rudist from Japan -i mplications for the palaeobiogeography of theCaprinidae (Bivalvia)2012
Author(s)
Sano, S., Skelton, P.W., Watarai, M., Iba, Y., Kondo, Y., Sato, Y.
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Journal Title
Palaeontology
Volume: 55
Issue: 4
Pages: 843-851
DOI
Related Report
Peer Reviewed
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[Journal Article] First record of an Early Barremian caprinid rudist from Japan-implications for the palaeobiogeography of the Caprinidae (Bivalvia)2012
Author(s)
Sano, S., Skelton, P.W., Watarai, M., Iba, Y., Kondo, Y., Sato, Y.
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Journal Title
Palaeontology
Volume: (in press)
Related Report
Peer Reviewed
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[Journal Article] Worldwide distribution of the modimorphic bivalve genus Caspoconca in late Mesozoic hydrocarbon seeps2012
Author(s)
Jenkins, R.G., Kaim, A., Little, C.T.S., Iba, Y., Tanabe, K., Cambell, K.A.
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Journal Title
Acta Palaeontologica Polonica
Volume: (in press)
Related Report
Peer Reviewed
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[Presentation] Belemn ite extinction and the origin of modern cephalopods 35 m.y. prior to the Cretace ous-Paleogene event2011
Author(s)
Iba, Y., Mutterlose , J., Tanabe, K., Sano, S., Misaki, A., Terabe, K.
Organizer
4th International S ymposium "Coleoid Cephalopods Through Time"
Place of Presentation
Natural HistoryMuseum, Stuttgart, Germany.
Year and Date
2011-09-07
Related Report
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[Presentation] Belemnite extinction and the origin of modern cephalopods 35 m.y. prior to the Cretaceous-Paleogene event2011
Author(s)
Iba,Y., Mutterlose, J., Tanabe, K., Sano, S., Misaki, A., Terabe, K.
Organizer
4th International Symposium "Coleoid Cephalopods Through Time"
Place of Presentation
Natural History Museum, Stuttgart, Germany
Year and Date
2011-09-07
Related Report
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