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@KusuhashiLab

MEMBER

Staff

Nao KUSUHASHI

Nao KUSUHASHI (Associate professor)

Research emphasis

  • Evolution of Mesozoic mammals (phylogeny and paleobiogeography)
  • Stratigraphy of Eocene & Miocene strata in Ehime Prefecture, SW Japan

See "Research" for more information

Graduate students

Master's course

Yusuke KURIHARA

Yusuke KURIHARA

Vertebrate paleontology

  • Early Cretaceous lizard fossils from the Fuxin Formation, Liaoning, northeastern China

Yusuke MACHIDA

Vertebrate paleontology

  • A microvertebrate fossil assemblage from the Upper Cretaceous Ashizawa Formation (Futaba Group), Fukushima, NE Japan
Kana NARITA

Kana NARITA

Geology

  • The Middle Miocene Takano Formation (Ishizuchi Group) along the Namegawa gorge, Toh'on, Ehime, SW Japan
Yuto TOMONAGA

Yuto TOMONAGA

Vertebrate paleontology

  • Fossil vertebrae from the Upper Cretaceous Upper Yezo Group, Haboro, Hokkaido, northern Japan
Ryosuke WAKIYAMA

Ryosuke WAKIYAMA

Fish osteology

  • Osteological study on Pagrus major from the coastal waters of Ehime Prefecture

Undergraduate students

Graduation research

Yusuke AOKI

Yusuke AOKI

  • Osteological observation and comparison of ranid frogs and other amphibians

Research in Earth Science

STUDENTS' RESEARCH

Publications

Peer-reviewed

  1. Sohda, K., Shimooka, K., Tani, K., Kusuhashi, N., and Saito, S. Accepted. The origin of igneous rock gravels of the Miocene Myojin Formation (Kuma Group), northwestern Shikoku. Journal of the Geological Society of Japan. (in Japanese with English abstract).
  2. Nakata, K., Kusuhashi, N., Saito, S., Ohfuji, H., and Nara, M. 2019. A "coarse-grained" metabasite body newly found in the Sambagawa metamorphic rocks in Kumakogen Town, Ehime Prefecture, SW Japan. Journal of the Geological Society of Japan 125: 447–452. (in Japanese with English abstract). doi: 10.5575/geosoc.2019.0010.
  3. Ochi, M., Mamiya, T., and Kusuhashi, N. 2014. A reexamination of the stratigraphy of the Miocene Kuma Group, Shikoku, SW Japan: the "Shimosakabatoge Formation" and the "Tomishige Formation". Journal of the Geological Society of Japan 120: 165–179. (in Japanese with English abstract). doi: 10.5575/geosoc.2014.0015.

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Unrefereed

  1. Yasui, K., Kusuhashi, N., and Wakiyama, R. 2021. A catalogue of vertebrate remains found during the first excavation of the Shijimizuka site housed in the Hamamatsu City Museum. Report of the Hamamatsu City Museum no. 33: 1–14. (in Japanese).
  2. Kusuhashi, N., Murakami, M., and Yasui, K. 2018. The deformed pelvic girdle of a knobsnout parrotfish (Scarus ovifrons) lacking the right pelvic fin. Science Report of the Toyohashi Museum of Natural History no. 28: 37–45. (in Japanese).
  3. Murakami, M., Kusuhashi, N., and Yasui, K. 2018. The mode of eruption of pharyngeal teeth in some scarid fishes (Labroidei, Perciformes). Science Report of the Toyohashi Museum of Natural History no. 28: 27–36. (in Japanese).
  4. Morimoto, S. 2016. Identification of fish bones of the Final Jomon period from the Ikawazu shell mound. Memoirs of the Tahara Municipal Museum no.8: 22–74. (in Japanese).

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Presentations at meetings

  1. Machida, Y., Kusuhashi, N., Suzuki, T., and Sato, A. 2021 (July). A vertebrate microfossil assemblage from the Upper Cretaceous Ashizawa Formation (Futaba Group), Fukushima, northeastern Japan. 2021 Annual Meeting of the Palaeontological Society of Japan, Online. (Oral in Japanese).
  2. Narita, K., Tani, K., and Kusuhashi, N. 2020 (Dec). Zircon U-Pb ages from the Miocene Myojin Formation (Kuma Group) and the Takano Formation (Ishizuchi Group), Ehime. 20th Annual Meeting of the Shikoku Branch of the Geological Society of Japan, Online. (Poster in Japanese).
  3. Yoshinaga, K., Tomonaga, Y., Shimizu, S., Nakatsu, M., Sohda, K., Nakamura, C., Aso, H., Hori, R. S. 2020 (Dec). Discovery of fossil assemblages from the Takayama limestone block of the Southern Chichibu Belt, Akehama Town, Seiyo City, Ehime Prefecture, Japan. 20th Annual Meeting of the Shikoku Branch of the Geological Society of Japan, Web. (Poster in Japanese).
  4. Sohda, K., Shimooka, K., Kusuhashi, N., Saito, S., and Tani, K. 2019 (Dec). The origin of igneous-rock gravels of the Miocene Myojin Formation,Kuma Group,northwestern Shikoku. 19th Annual Meeting of the Shikoku Branch of the Geological Society of Japan, Takamatsu, Kagawa, Japan. (Poster in Japanese).
  5. Sohda, K., Shimooka, K., Kusuhashi, N., Saito, S., and Tani, K. 2019 (Sep). Igneous-rock clasts of the Miocene Myojin Formation, Kuma Group, western Shikoku. 126th Annual Meeting of the Geological Society of Japan, Yamaguchi, Yamaguchi, Japan. (Poster in Japanese).
  6. Montani, A., Ohfuji, H., Kusuhashi, N., and Okamoto, T. 2019 (Sep). Glauconite from the Upper Cretaceous Upper Yezo Group in Haboro area, Hokkaido, northern Japan. 2019 Annual Meeting of the Japan Association of Mineralogical Sciences, Fukuoka, Fukuoka, Japan. (Poster in Japanese).
  7. Montani, A., Kusuhashi, N., Okamoto, T., and Ohfuji, H. 2018 (Sep). Glauconite from the Upper Cretaceous Upper Yezo Group in Haboro area,Hokkaido,northern Japan. 125th Annual Meeting of the Geological Society of Japan, Sapporo, Hokkaido, Japan. (Poster in Japanese).
  8. Jinnouchi, K., Kusuhashi, N., Liu, J., Takahashi, F., Shinoda, K., and Hasegawa, Y. 2018 (Feb). Dicynodont fossils from the Upper Triassic Momonoki Formation, Mine Group, Yamaguchi, Japan. 167th Regular Meeting of the Palaeontological Society of Japan. Matsuyama, Ehime, Japan. (Poster in Japanese).
  9. Nakata, K., Kusuhashi, N., and Nara, M. 2017 (Sep). A metagabbro body in the Sambagawa metamorphic rocks in midwestern Ehime Prefecture, SW Japan. 124th Annual Meeting of the Geological Society of Japan. Matsuyama, Ehime, Japan. (Poster in Japanese).
  10. Matsubara, T., Ando, Y., Kusuhashi, N., and Yamaji, A. 2017 (Sep). Molluscan age of the Paleogene Hiwadatoge Formation in western Shikoku, SW Japan. 124th Annual Meeting of the Geological Society of Japan. Matsuyama, Ehime, Japan. (Oral in Japanese).
  11. Kusuhashi, N., Ando, Y., Matsubara, T., Nara, M., Kurita, H., and Yamaji, A. 2017 (Sep). Stratigraphy of the Eocene Hiwadatoge Formation, Ehime, SW Japan. 124th Annual Meeting of the Geological Society of Japan. Matsuyama, Ehime, Japan. (Oral in Japanese).
  12. Mamiya, T., Kusuhashi, N., and Ichishima, H. 2015 (Jan). Cetacean fossils from the Miocene Chikubetsu Formation in Chikubetsu area, northwestern Hokkaido. 164th Regular Meeting of the Palaeontological Society of Japan. Toyohashi, Aichi, Japan. (Poster in Japanese).
  13. Ochi, M. and Kusuhashi, N. 2012 (Sep). Stratigraphic position of the "Shimosakabatoge Conglomerates" in Kumakogen and Uchiko towns, Ehime, Japan. 119th Annual Meeting of the Geological Society of Japan. Sakai, Osaka, Japan. (Poster in Japanese).

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Award

  1. Sohda, K. 2019. Poster Award (Sohda, K., Shimooka, K., Kusuhashi, N., Saito, S., and Tani, K. 2019. The origin of igneous-rock gravels of the Miocene Myojin Formation,Kuma Group,northwestern Shikoku. 19th Annual Meeting of the Shikoku Branch of the Geological Society of Japan).
  2. Ochi, M. 2015. The Geological Society of Japan Young Scientist Award (Ochi, M., Mamiya, T., and Kusuhashi, N. 2014. A reexamination of the stratigraphy of the Miocene Kuma Group, Shikoku, SW Japan: the "Shimosakabatoge Formation" and the "Tomishige Formation". Journal of the Geological Society of Japan 120: 165–179).

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Master's theses

  1. Sohda, K. 2021 (Acad Yr 2020–21). A reexamination of the "Kuma Group" distributed in the Inner Zone, Toh'on, Ehime, SW Japan.
  2. Kato, M. 2020 (Acad Yr 2019–20). Ontogenetic morphological change in skeletal elements of Trachurus japonicus and Seriola quinqueradiata from waters around Ehime.
  3. Montani, A. 2020 (Acad Yr 2019–20). Glauconite in the Upper Cretaceous Upper Yezo Group, Haboro and Kotambetsu, Hokkaido, northern Japan.
  4. Nakata, K. 2019 (Acad Yr 2018–19). Petrological study on a metagabbro body in the Sambagawa metamorphic rocks in Iyo City, Ehime, Southwest Japan.
  5. Mamiya, T. 2015 (Acad Yr 2014–15). Baleen whale fossils from the Miocene Chikubetsu Formation in Chikubetsu area, northwestern Hokkaido.
  6. Ochi, M. 2014 (Acad Yr 2013–14). Stratigraphic and volcano geological study on the Setouchi Volcanic Rocks in central part of Shikoku, SW Japan.

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Graduation research

  1. Nakatsu, M. 2021 (Acad Yr 2020–21). Morphological comparison of pharyngeal bones between three Recent labrid fishes.
  2. Narita, K. 2021 (Acad Yr 2020–21). The Middle Miocene Takano Formation (Ishizuchi Group) along the Namegawa gorge, Toh'on, Ehime, SW Japan.
  3. Shimizu, S. 2021 (Acad Yr 2020–21). Fish bone remains of the Late to Final Jomon period from the Ikawazu shell mound, Tahara, Aichi, central Japan.
  4. Tomonaga, Y. 2021 (Acad Yr 2020–21). Fossil vertebrae from the Upper Cretaceous Upper Yezo Group, Haboro, Hokkaido, northern Japan.
  5. Wakiyama, R. 2021 (Acad Yr 2020–21). Osteological study on Pagrus major from the coastal waters of Ehime Prefecture.
  6. Kurihara, Y. 2020 (Acad Yr 2019–20). Early Cretaceous lizard fossils from the Fuxin Formation, Liaoning, northeastern China.
  7. Machida, Y. 2020 (Acad Yr 2019–20). A microvertebrate fossil assemblage from the Upper Cretaceous Ashizawa Formation (Futaba Group), Fukushima, NE Japan: Dinosaurs.
  8. Inoue, K. 2019 (Acad Yr 2018–19). Cathodoluminescence characteristics and protolith estimation of quartz grains of sandstone beds in the Eocene Hiwadatoge Formation, western Shikoku, SW Japan.
  9. Sohda, K. 2019 (Acad Yr 2018–19). Igneous-rock gravels in the Miocene Myojin Formation, Kuma Group, western Shikoku, SW Japan.
  10. Tsujino, R. 2019 (Acad Yr 2018–19). Identification of fish bones of the Late to Final Jomon period from the Ikawazu shell mound, Tahara, Aichi, central Japan.
  11. Jinnouchi, K. 2018 (Acad Yr 2018). Dicynodont fossils from the Upper Triassic Momonoki Formation (Mine Group), Mine, Yamaguchi, Japan.
  12. Hironaka, Y. 2018 (Acad Yr 2017–18). The Middle Miocene Takano Formation (Ishizuchi Group) along the Namegawa gorge, Toon, Ehime, SW Japan.
  13. Kato, M. 2018 (Acad Yr 2017–18). Ontogenetic change in skeletal morphology of Trachurus japonicus from the coastal waters near Matsuyama, Ehime Prefecture.
  14. Montani, A. 2018 (Acad Yr 2017–18). Glauconite in the Cretaceous Yezo Group, Haboro district, Hokkaido, northern Japan.
  15. Onishi, T. 2017 (Acad Yr 2017). Clupeid and engraulid vertebra from marine sediments in Beppu Bay, Oita, SW Japan.
  16. Kudo, Y. 2017 (Acad Yr 2016–17). Identification of fish bone remains from the Ikawazu shell mound (Late–Final Jomon Period), Tahara City, Aichi, central Japan.
  17. Mizumura, Y. 2017 (Acad Yr 2016–17). Vertebral morphometrics of teleost fishes: toward identification of fish bone remains from archaeological sites.
  18. Murakami, M. 2017 (Acad Yr 2016–17). Morphology of pharyngeal bones, premaxilla, and dentary of Scarus ovifrons.
  19. Nakata, K. 2017 (Acad Yr 2016–17). Tectonite gravels included in the basal part of the Eocene Hiwadatoge Formation in Ehime, SW Japan.
  20. Urabayashi, C. 2017 (Acad Yr 2016–17). Interspecific osteological comparison of preopercle, opercle, and cleithrum of euteleost fishes.
  21. Wakata, S. 2017 (Acad Yr 2016–17). Interspecific osteological comparison of neurocranium-atlas joint of modern teleost fishes.
  22. Ando, Y. 2016 (Acad Yr 2015–16). The Eocene Hiwadatoge Formation around the Hiwadatoge Pass, Kumakogen Town, Ehime, SW Japan.
  23. Sugino, M. 2015 (Acad Yr 2014–15). Osteological description of Pagrus major (Sparidae, Perciformes): jaw skeleton and shoulder girdle.
  24. Mikami, H. 2014 (Acad Yr 2013–14). Measurement of modern fish vertebrae: toward the establishment of an index for identification of fish remains from archaeological sites.
  25. Sakakiyama, T. 2014 (Acad Yr 2013–14). A growth mark in an anuran bone from the Lower Cretaceous Sasayama Group, Hyogo, Japan.
  26. Mamiya, T. 2013 (Acad Yr 2012–13). Stratigraphic study of the Miocene Kuma Group in Tobe & Kumakogen towns, Ehime, Japan.
  27. Morimoto, S. 2013 (Acad Yr 2012–13). Identification of fish bones (Final Jomon period) from the Ikawazu shell mound, Tahara City, Aichi, Japan.
  28. Ochi, M. 2012 (Acad Yr 2011–12). Stratigraphic study of the "Tertiary" Shimosakabatoge Conglomerates distributed in the Kumakogen and Uchiko towns, Ehime, Japan.
  29. Koizumi, S. 2011 (Acad Yr 2010–11). Description and comparison of Lower Cretaceous red beds in Kinki and Chugoku regions, SW Japan.

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Thematic studies

  1. Aoki, Y. 2021 (Acad Yr 2020–21). Osteological observation and comparison of ranid frogs and other amphibians.
  2. Nakatsu, M. 2020 (Acad Yr 2019–20). Osteological observation and comparison between Trachurus japonicus and Sebastes sp.: toward osteological description of recent fishes.
  3. Narita, K. 2020 (Acad Yr 2019–20). The Miocene Takano Formation (Ishizuchi Group) along the Namegawa gorge, Toh'on, Ehime, SW Japan.
  4. Shimizu, S. 2020 (Acad Yr 2019–20). Osteological comparison between Trachurus japonicus and Cololabis saira etc.: toward identification of fish bone remains from a shell mound.
  5. Tomonaga, Y. 2020 (Acad Yr 2019–20). Observation and morphological comparison of vertebrae of recent squamates: toward identification of fossil vertebrae from the Yezo Group, Hokkaido, northern Japan.
  6. Wakiyama, R. 2020 (Acad Yr 2019–20). Morphological comprison of suspensoria of three sparid fishes: toward identification of a fish fossil from the Ueno Formation, Kobiwako Group, central Japan.
  7. Kurihara, Y. 2019 (Acad Yr 2018–19). Osteological observation of an extant lacertid lizard Takydromus tachydromoides: toward identification of lizard fossils from the Lower Cretaceous Fuxin Formation, Liaoning, China.
  8. Machida, Y. 2019 (Acad Yr 2018–19). A microvertebrate fossil assemblage from the Upper Cretaceous Ashizawa Formation (Futaba Group), Fukushima, NE Japan: isolated teeth of theropod dinosaurs.
  9. Inoue, K. 2018 (Acad Yr 2017–18). Quartz-rich sandstone in the Eocene Hiwadatoge Formation, western Shikoku, SW Japan.
  10. Sohda, K. 2018 (Acad Yr 2017–18). Igneous-rock clasts of the Lower Miocene Myojin Formation, Kuma Group, western Shikoku, SW Japan.
  11. Tsujino, R. 2018 (Acad Yr 2017–18). Osteological observation and comparison between Trachurus japonicus, Parupeneus multifasciatus, and Dentex hypselosomus.
  12. Hironaka, Y. 2017 (Acad Yr 2016–17). Tuff of the basal part of the Middle Miocene Takano Formation (Ishizuchi Group), Ehime, SW Japan.
  13. Jinnouchi, K. 2017 (Acad Yr 2016–17). A review on the Synapsida.
  14. Kato, M. 2017 (Acad Yr 2016–17). Osteological observation and comparison between three fish species.
  15. Montani, A. 2017 (Acad Yr 2016–17). Analyses on glauconite within the Eocene Hiwadatoge Formation.
  16. Kudo, Y. 2016 (Acad Yr 2015–16). Osteological comparison between Trachurus japonicus and Pagrus major.
  17. Mizumura, Y. 2016 (Acad Yr 2015–16). Osteology of Trachurus japonicus and Carangoides equula.
  18. Murakami, M. 2016 (Acad Yr 2015–16). Osteological observation between Trachurus japonicus and Cyprinus carpio.
  19. Nakata, K. 2016 (Acad Yr 2015–16). Composition of an "unidentified boulder" from the basal conglomerate of the Eocene Hiwadatoge Formation in Ehime, SW Japan.
  20. Urabayashi, C. 2016 (Acad Yr 2015–16). Osteological comparison between Trachurus japonicus and Psenopsis anomala.
  21. Wakata, S. 2016 (Acad Yr 2015–16). Osteological comparison between Trachurus japonicus, Sebastiscus marmoratus, and Sebastes ventricosus.
  22. Ando, Y. 2015 (Acad Yr 2014–15). The Eocene Hiwadatoge Formation in Nimyo, Kumakogen town, Ehime, Japan.
  23. Onishi, T. 2015 (Acad Yr 2014–15). Osteological comparison between Trachurus japonicus (Carangidae), Sphyraena pinguis (Sphyraenidae), and Nemipterus bathybius (Nemipteridae).
  24. Sugino, M. 2014 (Acad Yr 2013–14). Osteological comparison between Trachurus japonicus and Carangoides equula.
  25. Mikami, H. 2013 (Acad Yr 2012–13). Osteological comparison between Decapterus maruadsi, Trachurus japonicus, and Sebastes ventricosus.
  26. Onagi, K. 2013 (Acad Yr 2012–13). The utility of gravel orientation for paleocurrent reconstruction.
  27. Sakakiyama, T. 2013 (Acad Yr 2012–13). A review on the age determination of amphibians by skeletochronology.
  28. Mamiya, T. 2012 (Acad Yr 2011–12). The Kuma Group distributed in Tomishige, Kumakogen Town, Ehime, Japan.
  29. Morimoto, S. 2012 (Acad Yr 2011–12). Osteological comparison between Trachurus japonicus (Perciformes, Carangidae) and Scomber japonicus (Perciformes, Scombridae).
  30. Ochi, M. 2011 (Acad Yr 2010–11). The Kuma Group exposed along the Kuma River at Higashimyojin, Kumakogen Town, Ehime, Japan.
  31. Koizumi, S. 2010 (Acad Yr 2009–10). Sedimentary environments of the Kuma Group in Kumakogen Town, Ehime, Japan.

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Field research
Geological fieldwork training
(Kumakogen, Ehime; November 2009)
Field research
Geological fieldwork training
(Kumakogen, Ehime; November 2011)
Field research
Geological fieldwork training
(Toon, Ehime; November 2019)
Field research
Geological fieldwork
(Toon, Ehime; April 2017)
Fossil excavation
Fossil excavation
(Haboro, Hokkaido; June 2013)
Osteological study
Osteological study
(November 2011)
Osteological study
Osteological study
(November 2019; by K. Narita)
Classification of remains
Classification of sieved archaeological remains
(February 2012)
Classification of remains
Classification of sieved archaeological remains
(March 2016)
Classification of remains
Classification of sieved archaeological remains
(April 2018)
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