Research keywords (3)：
Paleozoic
, Triassic
, conodont
Research theme for competitive and other funds (4)：
2021 - 2025 超海洋パンサラッサ海における複合化石生層序と安定同位体比層序
2020 - 2022 絶滅生物の古生態の解明:コノドントの食性についての考察
2019 - 2020 The Induan-Olenekian boundary of the Lower Triassic successions of western North America and Southwest Japan
2015 - 2016 Conodont biostratigraphy of the Lower Triassic Olenekian in the Tethyan and Panthalassan areas.
Papers (33)：
Takumi Maekawa, Toshifumi Komatsu, Phong Nguyen Duc, Tien Dinh Cong, Huyen Dang Tran. Additional specimens of index conodonts from the Lower Triassic Lang Son and Bac Thuy formations, Lang Son Province, northeastern Vietnam. BULLETIN OF THE NATIONAL MUSEUM OF NATURE AND SCIENCE SERIES C. 2023. 49. 29-43
Osamu Takahashi, Takumi Maekawa, Paulian Dumitrica, Phong Duc Nguyen, Toshifumi Komatsu. Latentifistularia and other radiolarian species from the lower Smithian (Lower Triassic) Lang Son Formation, NE Vietnam. Revue de Micropaléontologie. 2022. 75. 100610-100610
Takumi Maekawa, James F. Jenks. Smithian (Olenekian, Early Triassic) Conodonts from Ammonoid-Bearing Limestone Blocks at Crittenden Springs, Elko County, Nevada, USA. Paleontological Research. 2021. 25. 3. 201-245
James F. Jenks, Takumi Maekawa, David Ware, Yasunari Shigeta, Arnaud Brayard, Kevin G. Bylund. Late Griesbachian (Early Triassic) ammonoids and nautiloids from the Dinwoody Formation at Crittenden Springs, Elko County, Nevada. New Mexico Museum of Natural History and Science Bulletin. 2021. 86. 1-23
Thuy Thi Nhu Ha, Takumi Maekawa, Hideko Takayanagi, Yasufumi Iryu. Spathian to Aegean (upper Lower Triassic to lower Middle Triassic) carbon isotope stratigraphy constrained by the conodont biostratigraphy of carbonates on top of a mid-oceanic seamount formed in the Panthalassic Ocean. Island Arc. 2021. 30. 1
Kiyoshi Kawabata, Takaharu Sato, Tetsuya Ogura, Takumi Maekawa. Identification of stone materials from stonewalls of the Toyotomi Period Osaka Castle. The Archaeological Report of the Osaka Castle Site in Osaka, Japan. 2024. 21. 253-277
Takumi Maekawa. Fossil remains from Ma12 marine clay bed deposit. The Archaeological Report of the Osaka Castle Site in Osaka, Japan. 2024. 21. 242-252
Conodont biostratigraphy and Kellwasser Event horizons of the Upper Devonian Toc Tac Fm. in Ha Giang Province, Vietnam
(The 172th Regular Meeting of the Paleontological Society of Japan 2023)
The Induan-Olenekian boundary of the Triassic Kamura Formation
(The 171th Regular Meeting of the Paleontological Society of Japan 2022)
Occurrence of relict latentifistularian (Radiolaria)species in the lower Smithian unit of the Lower Triassic Lang Son Formation, northeastern Vietnam
(The 2021 Annual Meeting of the Paleontological Society of Japan 2021)
