Papers - KOARAI Kazuto
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First report of the ichnogenus Magnoavipes from China: New discovery from the Lower Cretaceous inter-mountain basin of Shangzhou, Shaanxi Province, central China Reviewed International coauthorship
Masaki Matsukawa, Martin G. Lockley, Keiichi Hayashi, Kazuto Koarai, Chen Peiji, Zhang Haichun
Cretaceous Research 47 131 - 139 2014.1
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Paleoecology and evolution of Jurassic–Cretaceous corbiculoids from Japan Reviewed
Naohisa NISHIDA, Akihisa SHIRAI, Kazuto KOARAI, Kosuke NAKADA, Masaki MATSUKAWA
Palaeogeography, Palaeoclimatology, Palaeoecology 359 ( 1 ) 239 - 252 2013.1
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KOARAI KAZUTO, TSUCHIDA NAOMI, MATSUKAWA MASAKI
Bulletin of Tokyo Gakugei University. Natural Sciences 63 67 - 89 2011.9
Authorship：Lead author Publisher：東京学芸大学
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KOARAI KAZUTO, MATSUKAWA MASAKI
Bulletin of Tokyo Gakugei University. Natural Sciences 62 103 - 118 2010.9
Authorship：Lead author Publisher：東京学芸大学
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Revised age of the Sasayama Group, southwest Japan, based on ostracode and conchostracan bio-stratigraphy and zircon fission-track dating Reviewed International coauthorship
Keiichi HAYASHI, Masaki MATSUKAWA, Hiroto Ohira, Peiji Chen, Jinshen Zhen, Makoto ITO, Kazuto KOARAI, Ikuwo OBATA
The Jurnal of the Geological Society of Japan 116 ( 5 ) 283 - 286 2010.5
Publisher：日本地質学会
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よこはま動物園ズーラシアでの校外学習
小荒井 千人
慶應義塾湘南藤沢中・高等部 15年記念紀要 63 - 74 2008.3
Authorship：Lead author
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A gigantic ammonite from the Upper Jurassic Arimine Formation of the Tetori Group, Japan
Masaki Matsukawa, Kazuto Koarai, Makiko Fukui, Koji Suzuki, Yutaka Ogawa, Shigeru Kikukawa, Masahiro Kometani, Toshikazu Hamuro
Bulletin of Tateyama Caldera Sabo Museum ( 9 ) 1 - 10 2008
Publisher：Tateyama Caldera Sabo Museum
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Matsukawa Masaki, Fukui Makiok, Koarai Kazuto, Asakura Tsutomu, Aono Hiromi
Journal of the Geological Society of Japan 113 ( 8 ) 417 - 437 2007.8
Publisher：The Geological Society of Japan
The Tetori Group is distributed in the Hida-Furukawa area. There are diverse opinions about the stratigraphy of the group. So, we restudied the stratigraphy of the group. The group can be divided into six formations: the Tanemura, Numamachi, Sugizaki/Tochio, Taie and Inagoe in ascending order. The geological map of the area was revised to show the distribution of these six formations. These formations are suggested the environments of alluvial fan to shallow marine, shown by deposits transported from the eastern hinterland and fossil evidence. Ammonite indices suggesting Hauterivian to Barremian age occur in the Inagoe Formation. This shows the evidence of the third marine transgression in the Tetori Group. As marine bivalves including inoce- ramids occur in the Sugizaki Formation as well, two marine transgressions can be recognized in the Tetori Group in this area. Consequently, three sequential marine transgressions: Bathonian to Oxfordian, Tithonian to Berriasian, and Hautervian to Barremian, can be recognized in the Tetori area. In the eastern part of the Heilongjiang, China, two marine transgressions, the first from late Oxfordian to Volgian (= Tithonian to early Berrriasian) and the second from Barremian to Aptian, are recognizable. Therefore, these marine transgressions in China correspond to these in the Tetori area. Occurrence of common marine bivalve species and related ammonite species suggests the same realm for both the eastern part of the Heilongjiang, China and the Tetori area, Japan, during Hauterivian to Barremian time. These faunal compositions are different from those of areas in the southwest of Japan influenced by currents from low latitudes. This supports the idea that a peninsula of land was present between both the Tetori area and areas in southwest of Japan. Thus, both areas of the eastern part of the Heilongjiang and the Tetori area were influenced by current from the high latitude.
Other Link： https://jlc.jst.go.jp/DN/JALC/00299615268?from=CiNii
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KOARAI KAZUTO, MATSUKAWA MASAKI, MATSUKAWA MARIKO
Education of Earth Science 60 ( 4 ) 125 - 135 2007.7
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Practical usage of the fossil mesosaurus for studying palaeontology in the class.
KOARAI KAZUTO
ANNALS of The Teacher Training Center Keio University ( 18 ) 9 - 20 2007.3
Authorship：Lead author Publisher：慶應義塾教職課程センター
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The Cretaceous Tetori biota in Japan and its evolutionary significance for terrestrial ecosystems in Asia Reviewed International coauthorship
Matsukawa, M, Ito, M, Nishida, N, Koarai, K, Lockley, M.G, Nichols, D.J
Cretaceous Research 27 ( 2 ) 199 - 225 2006
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Use of Models to Estimate Dinosaur Weight as Teaching Aids Reviewed
MATSUKAWA Masaki, KOARAI Kazuto, SHIBATA Kenichiro, NAKANISHI Ryouhei
Education of Earth Science 59 ( 3 ) 89 - 100 2006
Publisher：Japan Society of Earth Science Education
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Review of Japanese dinosaur track localities: implications for ichnotaxonomy, paleogeography and stratigraphic correlation Reviewed International coauthorship
Matsukawa, M, Shibata, K, Kujihara, R, Koarai, K, Lockley, M.G
Ichnos 12 201 - 222 2005
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Sedimentary environments of the Pleistocene Kazusa Group exposed on the Tamagawa River floor
Excursion Guidebook - The 111th Annual Meeting of the Geological Society of Japan (2004, Chiba) - 81 - 92 2004
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Stratigraphy and sedimentary basin developments of the Tetori Group in its main area, central Japan Reviewed
MATSUKAWA Masaki, KOARAI Kazuto, SHIONOYA Sho, SHINKAI Takuya, NAKADA Kosuke, MATSUI Tetsuya, AONO Hiromi, KOBAYASHI Norio, OKUBO Atsushi, HAYASHI keiichi, ITO Makoto
Journal of the Geological Society of Japan 109 ( 7 ) 383 - 398 2003
Publisher：日本地質学会
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Stratigraphy of the Tetori Group in the eastern part of the Kuzuryugawa area, Fukui Prefecture, Japan and correlation with its main part in the vicinity of Mount Hakusan, central Japan
Bulletin of Tokyo Gakugei University, Section 4 Mathematics and Natural Sciences 55 191 - 200 2003
Publisher：Committee of Publication of Bulletin of Tokyo Gakugei University
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Zoo and phyto biostratigraphy of the Tetori Group and evolutionary significance of terrestrial paleoecosystem Reviewed
MATSUKAWA Masaki, KOARAI Kazuto, OKUBO Atsushi, ITO Makoto
Journal of the Geological Society of Japan 109 ( 8 ) 466 - 477 2003
Publisher：Geological Society of Japan
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昭島地域の地質野外実習案内
小荒井千人, 青野宏美, 前田由紀
地質野外実習地としての多摩川中流域および狭山丘陵に分布する上総層群の露頭の現状とそれに基づく教材開発（多摩川環境調査助成集 Vol. 24） 218 - 231 2002.4
Authorship：Lead author
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秋川地域の地質野外実習案内
青野宏美, 小荒井千人
地質野外実習地としての多摩川中流域および狭山丘陵に分布する上総層群の露頭の現状とそれに基づく教材開発（多摩川環境調査助成集 Vol. 24） 254 - 263 2002.4
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The Mesozoic Tetori Group in the Upper Stream of the Tetori River and its Related Areas
MATSUKAWA Masaki, KOARAI Kazuto, SHIONOYA Susumu, SHINKAI Takuya, NAKADA Kosuke, MATSUI Tetsuya, AONO Hiromi, KOBAYASHI Norio, OKUBO Atsushi, HAYASHI Keiichi, ITO Makoto
3 - 19 2002
Publisher：石川県白山自然保護センター