Takumi Maekawa

Profile Information

Affiliation: 学芸員, 学芸課, 大阪市立自然史博物館

Degree: 理学(熊本大学)

ORCID iD: https://orcid.org/0000-0002-1154-1430
J-GLOBAL ID: 201801008059135812
researchmap Member ID: B000314009

Research Interests

Research Areas

Natural sciences / Biogeoscience /

Research History

Apr, 2020 - Present

Curator, Osaka Museum of Natural History
May, 2017 - Mar, 2020

Researcher, Kumamoto University
Nov, 2016 - Apr, 2017

Kumamoto University

Education

Apr, 2012 - Sep, 2016

Kumamoto University
Apr, 2010 - Mar, 2012

Kumamoto University
Apr, 2006 - Mar, 2010

Nara University of Education

Awards

Jun, 2020

Best paper award, 西南日本の愛媛県に露出する三畳系田穂層の田穂川部層から産出した前期三畳紀のコノドント化石, Paleontological Society of Japan

前川匠, 小松俊文, 小池敏夫
Jun, 2017

優秀ポスター賞, 愛媛県西予市田穂に分布する三畳系田穂層から産出した前期三畳紀のコノドント化石とその回復過程, 日本古生物学会

前川匠, 小松俊文, 小池敏夫, 重田康成
Feb, 2017

ポスター賞, ベトナム北部ハーザン省のシーファイ地域に分布する上部デボン系トクタット層のフラスニアン・ファメニアン境界とケルワッサー事変, 日本地質学会西日本支部

浦川良太, 小松俊文, 前川匠, 高島礼詩, 山口龍彦, 田中源吾, グエン・ダック・フォン, フン・ザン・ディン, ター・ホア・フォン

Papers

Early Dienerian ammonoids and nautiloids and a new late Griesbachian ammonoid site from the Dinwoody Formation (Thaynes Group) at Crittenden Springs, Elko County, Nevada

James F. Jenks, Takumi Maekawa, Yasunari Shigeta, David Ware, Arnaud Brayard, Kevin G. Bylund, Daniel A. Stephen, Noreen Kittrick

New Mexico Museum of Natural History & Science Bulletin, 97 1-29, Jan, 2025 Peer-reviewed
Smithian-aged (Early Triassic, Early Olenekian) crinoid ossicles from exotic limestone blocks in the lower part of the Thaynes Formation at Crittenden Springs, Elko County, Nevada

Takumi Maekawa, James F. Jenks

Paleontological Research, 29 1-23, Jan, 2025 Peer-reviewedLead authorCorresponding author
26

Additional specimens of index conodonts from the Lower Triassic Lang Son and Bac Thuy formations, Lang Son Province, northeastern Vietnam

Takumi Maekawa, Toshifumi Komatsu, Phong Nguyen Duc, Tien Dinh Cong, Huyen Dang Tran

BULLETIN OF THE NATIONAL MUSEUM OF NATURE AND SCIENCE SERIES C, 49 29-43, Dec 20, 2023 Peer-reviewedLead author
Latentifistularia and other radiolarian species from the lower Smithian (Lower Triassic) Lang Son Formation, NE Vietnam

Osamu Takahashi, Takumi Maekawa, Paulian Dumitrica, Phong Duc Nguyen, Toshifumi Komatsu

Revue de Micropaléontologie, 75 100610-100610, Jul, 2022 Peer-reviewed
Smithian (Olenekian, Early Triassic) Conodonts from Ammonoid-Bearing Limestone Blocks at Crittenden Springs, Elko County, Nevada, USA

Takumi Maekawa, James F. Jenks

Paleontological Research, 25(3) 201-245, Jul 1, 2021 Peer-reviewedLead author
Late Griesbachian (Early Triassic) ammonoids and nautiloids from the Dinwoody Formation at Crittenden Springs, Elko County, Nevada

James F. Jenks, Takumi Maekawa, David Ware, Yasunari Shigeta, Arnaud Brayard, Kevin G. Bylund

New Mexico Museum of Natural History and Science Bulletin, 86 1-23, May, 2021 Peer-reviewed
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

Thuy Thi Nhu Ha, Takumi Maekawa, Hideko Takayanagi, Yasufumi Iryu

Island Arc, 30(1), Jan 24, 2021 Peer-reviewed
Growth rate is temperature‐dependent, but the proportion of resource allocation between the growth and gonads is not, in early adult stage of the lancelet branchiostoma japonicum

Fumio Takeshita, Takumi Maekawa, Yasuhisa Henmi

Marine Ecology, 42(1), Jan 17, 2021 Peer-reviewed
First report of early Permian Albaillellarian radiolarians from East Timor

Takumi Maekawa, Shoichi Kiyokawa, Haruyoshi Maeda, Gengo Tanaka, Jovita E. F. Costa, Aquiles T. Freitas

Paleontological Research, 25(1) 32-40, Jan 1, 2021 Peer-reviewedLead author
Carbon isotope chemostratigraphy and conodont biostratigraphy around the Smithian–Spathian boundary in the Panthalassan carbonate succession (SW Japan)

Takumi Maekawa, Toshifumi Komatsu, Yasunari Shigeta, Reishi Takashima, Tatsuhiko Yamaguchi

Journal of Asian Earth Sciences, 205 104570-104570, Jan, 2021 Peer-reviewedLead author
Paratectonatica tigrina (Gastropoda: Naticidae) adjusts its predation tactics depending on the chosen prey and their shell weight relative to its own

Fumio Takeshita, Takumi Maekawa

Journal of the Marine Biological Association of the United Kingdom, 100(6) 1-6, Sep 18, 2020 Peer-reviewed
The Kellwasser Events in the Upper Devonian Xom Nha Formation, Central Vietnam

Ryo Matsuo, Toshifumi Komatsu, Hiroki Matsuda, Takumi Maekawa, Toshitaka Inada, Reishi Takashima, Toshihiro Yamada, Mark Williams, Phong Duc Nguyen, Hung Dinh Doan …

Journal of the Sedimentological Society of Japan, 78(2) 55-75, Feb 25, 2020 Peer-reviewed
Ostracods Reveal Jomon Transgression – A Case Study of the Holocene Borehole Core from Maejima Island, Kumamoto, Southwest Japan.

Tanaka G, Henmi Y, Maekawa T, Niiyama S, Komatsu T

2019 International Conference on Climate Change, Disaster Management and Environmental Sustainability. Kumamoto, Japan (Proceedings)., Dec, 2019 Peer-reviewed
Recent ostracod assemblages from Phu Quoc Island, southern Vietnam

Takumi Maekawa, Sota Niiyama, Gengo Tanaka, Koya Matsumoto, Toshifumi Komatsu

Proceedings of the 2019 International Conference on Climate Change, Disaster Management and Environmental Sustainability, 513-517, Dec, 2019 Peer-reviewedLead author
Titanium local coordination environments in Cretaceous-Paleogene and Devonian-Carboniferous boundary sediments as a possible marker for large meteorite impact

Tsubasa Tobase, Akira Yoshiasa, Toshifumi Komatsu, Takumi Maekawa, Hidetomo Hongu, Maki Okube, Hiroshi Arima, Kazumasa Sugiyama

PHYSICS AND CHEMISTRY OF MINERALS, 46(7) 675-685, Jul, 2019 Peer-reviewed
The Kellwasser events in the Upper Devonian Frasnian to Famennian transition in the Toc Tac Formation, northern Vietnam

Toshifumi Komatsu, Ryota Urakawa, Toshitaka Inada, Kazuki Yamauchi, Takumi Maekawa, Reishi Takashima, Mark Williams, Phong D. Nguyen, Hung D. Doan, Minh T. Nguyen …

Island Arc, 28(1) 1-17, Mar, 2019 Peer-reviewed
Recent ostracod distribution in western Kyushu, Japan, related to the migration of Chinese continental faunal elements

Gengo Tanaka, Yasuhisa Henmi, Tatsuya Masuda, Hiroshi Moriwaki, Toshifumi Komatsu, Baochun Zhou, Takumi Maekawa, Sota Niiyama, Phong D. Nguyen, Hung D. Doan …

MARINE MICROPALEONTOLOGY, 146 1-38, 2019 Peer-reviewed
The Ordovician and Silurian conodonts of Japan: Their biostratigraphical and paleogeographical significance

Peep Mannik, Takumi Maekawa, Gengo Tanaka, Toshifumi Komatsu, David Siveter, Mark Williams, Olle Hints, Thijs R. A. Vandnbroucke

Island Arc, 27(6), Nov, 2018 Peer-reviewed
Early Triassic conodonts from the Tahogawa Member of the Taho Formation, Ehime Prefecture, Southwest Japan

MAEKAWA TAKUMI, KOMATSU TOSHIFUMI, KOIKE TOSHIO

Paleontological Research, 22(Supplement) 1-62, Aug, 2018 Peer-reviewedLead author
Missourian (Kasimovian, Late Pennsylvanian) conodonts from limestone boulders, Mizuboradani Valley, Gifu Prefecture, central Japan

MAEKAWA Takumi, KOMATSU Toshifumi, TANAKA Gengo, WILLIAMS Mark, STOCKER Christopher P, OKURA Masatoshi, UMAYAHARA Akihiro

Paleontological Research, 22(3) 279-289, Jul, 2018 Peer-reviewedLead author

Misc.

3

3D画像の活用：くるくるアンモナイト

前川匠

Nature Study, 71(3) 6, Mar, 2025 Lead author
小難しい学芸員のやさしい小咄「変わった形の殻をもつアンモナイト」

前川匠

Nature Study, 70(10) 11, Oct, 2024 Lead authorCorresponding author
砂岩泥岩互層の崖

前川匠

Nature Study, 70(7) 1, Jul, 2024 Lead authorCorresponding author
Identification of stone materials from stonewalls of the Toyotomi Period Osaka Castle

Kiyoshi Kawabata, Takaharu Sato, Tetsuya Ogura, Takumi Maekawa

The Archaeological Report of the Osaka Castle Site in Osaka, Japan, 21 253-277, Mar, 2024
Fossil remains from Ma12 marine clay bed deposit

Takumi Maekawa

The Archaeological Report of the Osaka Castle Site in Osaka, Japan, 21 242-252, Mar, 2024 Lead authorCorresponding author
3

石を溶かして微化石を得る

前川匠

Nature Study, 69(10) 6, Oct, 2023 Lead authorCorresponding author
鉱山跡を見に行こう！

前川匠

Nature Study, 68(12) 9, Dec, 2022 Lead authorCorresponding author
2

調査中に出会った生き物

前川匠

Nature Study, 68(2) 2, Feb, 2022 Lead authorCorresponding author
虎目石（タイガーズアイ）

前川匠

Nature Study, 68(1) 1, Jan, 2022 Lead authorCorresponding author
黄鉄鉱を含む石英脈

前川匠

Nature Study, 67(8) 1, Jul, 2021 Lead authorCorresponding author
2

大阪層群の貝化石

前川匠

Nature Study, 67(4) 9, Apr, 2021 Lead authorCorresponding author
多金属鉱脈

前川匠

Nature Study, 67(4) 1, Apr, 2021 Lead authorCorresponding author
2

春は野外で地層を見よう

前川匠

Nature Study, 67(4) 7, Apr, 2021 Lead authorCorresponding author
2

二枚貝化石とあなどるなかれ

前川匠

Nature Study, 67(2) 5, Feb, 2021 Lead authorCorresponding author
微化石研究の悲喜こもごも

前川匠

Nature Study, 66(11) 2-4, Nov, 2020 Lead authorCorresponding author
Devonian-Carboniferous transition in the Pho Han Formation on Cat Ba Island, northeastern Vietnam.

Komatsu, T, Takashima, R, Naruse, H, Phuong, T.H, Dang, T.H, Nguyen, D.P, Dinh, C.T, Ho, T.C, Tran, T.V, Kato, S …

he Journal of the Geological Society of Japan, 118 5-6, 2012
Devonian to Carboniferous transition in the Pho Han Formation in northern Vietnam-A preliminary assessment

Komatsu, T, Takashima, R, Naruse, H, Ta, H.P, Dang, T.H, Nguyen, D.P, Ho, T.C, Tran T.V, Kato, S, Maekawa, T

Proceedings of the second Asia-Pacific Geoparks Network Symposium, 2011

Books and Other Publications

第54回特別展「自然史のイラストレーション」解説書自然史のイラスト集

石田惣, 佐久間大輔, 西野萌, 長谷川匡弘, 前川匠, 松本吏樹郎, 横川昌史 (Role: Contributor, 2.自然史のイラスト集 4）無いものを表現する「古生物の復元画：コノドント」)

大阪市立自然史博物館, Feb 19, 2024
Olenekian (Early Triassic) ammonoids and conodonts from southern Thailand

Kittichai Tongtherm, Yasunari Shigeta, Apsorn Sardsud, Kaito Asato, Takumi Maekawa, Takuma Haga, Sachiko Agematsu, Katsuo Sashida (Role: Joint author, descriptions of conodonts)

National Museum of Nature and Science, Jan, 2023
第51回特別展「大阪アンダーグラウンドー掘ってわかった大地のひみつー」解説書大阪地下のひみつ

石井陽子, 石田惣, 佐久間大輔, 田中嘉寛, 中条武司, 西野萌, 前川匠, 松本吏樹郎 (Role: Contributor, 1.地球の中はどうなっているの？；2.大阪平野の周辺の山々から見つかる岩石の色々)

大阪市立自然史博物館, Apr 20, 2021
Olenekian (Early Triassic) stratigraphy and fossil assemblages in northeastern Vietnam

Yasunari Shigeta, Toshifumi Komatsu, Takumi Maekawa, Huyen Dang Tran (Role: Joint editor)

Mar, 2014

Presentations

Conodonts from the Lower Triassic Dinwoody Formation, Crittenden Springs, Nevada

Takumi Maekawa, James F. Jenks

The 2024 annual meeting of the Paleontological Society of Japan, Jun 22, 2024
宮崎県高千穂町に分布する三畳系上村層のインドゥアン階－オレネキアン階境界とオレネキアン階－アニシアン階境界

前川匠, 田中源吾

日本地質学会西日本支部令和5年度総会第174回例会, Mar 2, 2024
コノドントと放散虫ー日本列島の地史を明らかにした微化石ー

前川匠

ミュージアム連続講座2022「大阪と自然科学」, Mar 5, 2023 Invited
Conodont biostratigraphy and Kellwasser Event horizons of the Upper Devonian Toc Tac Fm. in Ha Giang Province, Vietnam

Toshifumi Komatsu, Kazuki Yamauchi, Takumi Maekawa, Reishi Takashima, Yukari Ogata, Toshihiro Yamada, Doan Dinh Hung

The 172th Regular Meeting of the Paleontological Society of Japan, Feb 4, 2023
The Induan-Olenekian boundary of the Triassic Kamura Formation

Takumi Maekawa

The 171th Regular Meeting of the Paleontological Society of Japan, Feb 5, 2022
Occurrence of relict latentifistularian （Radiolaria）species in the lower Smithian unit of the Lower Triassic Lang Son Formation, northeastern Vietnam

Osamu Takahashi, Takumi Maekawa, Paulian Dumitrica, Phoung D. Nguyen, Toshifumi Komatsu

The 2021 Annual Meeting of the Paleontological Society of Japan, Jul 3, 2021
Upper Olenekian to Lower Anisian stable carbon isotope chemostratigraphy of the Tahogawa Member, Taho Formation

Thuy Thi Nhu Ha, Takumi Maekawa, Hideko Takayanagi, Yasufumi Iryu

The 170th Regular Meeting of the Paleontological Society of Japan, Feb 7, 2021
Preliminary study of ostracods from the upper Carboniferous Nagaiwa Formation, northeastern Japan

Gengo Tanaka, Takumi Maekawa

The 169th Regular Meeting of the Paleontological Society of Japan, Feb 8, 2020
Bio- and chemo-stratigraphic indexes for global correlation of the Smithian-Spathian boundary in Vietnam and Japan

Takumi Maekawa, Toshifumi Komatsu, Yasunari Shigeta, Dang Tran Huyen

5th International Palaeontological Congress, Jul, 2018
ネバダ州Crittenden Springsの含アンモノイド石灰岩から産出したスミシアン亜期(前期オレネキアン期)のコノドント化石

前川匠, JENKS James F, 重田康成

日本古生物学会年会講演予稿集, Jun 22, 2018
ベトナム北部シーファイ峠に分布する上部デボン系のコノドント生層序

稲田稔貴, 小松俊文, 浦川良太, 前川匠, 高嶋礼詩, PHONG Nguyen D, HUNG Doan D

日本古生物学会年会講演予稿集, Jun 22, 2018
愛媛県西予市田穂に分布する三畳系田穂層から産出した前期三畳紀のコノドント化石とその回復過程

前川匠, 小松俊文, 小池敏夫, 重田康成

日本古生物学会年会講演予稿集, Jun 9, 2017
北部ベトナムのドンバン地域に分布する上部デボン系のフラスニアン・ファメニアン境界とケルワッサー事変

小松俊文, 浦川良太, 前川匠, 高嶋礼詩, 田中源吾, 山口龍彦, PHONG Nguyen D

日本古生物学会年会講演予稿集, Jun 9, 2017
Early Triassic conodont biostratigraphy and recovery pattern of the “Lower” Member of the Taho Formation, Southwest Japan

Takumi Maekawa, Toshifumi Komatsu, Toshio Koike, Yasunari Shigeta

IGCP 630 Meeting in Japan, Jun, 2017
Conodont biostratigraphy of the Lower Triassic Bac Thuy Formation, northeastern Vietnam

Takumi Maekawa, Toshifumi Komatsu, Yasunari Shigeta, Dang Tran Huyen

IGCP 630 Meeting in Japan, Jun, 2017
ベトナム北部ハーザン省のシーファイ地域に分布する上部デボン系トクタット層のフラスニアン・ファメニアン境界とケルワッサー事変

浦川良太, 小松俊文, 前川匠, 高島礼詩, 山口龍彦, 田中源吾, グエン・ダック・フォン, フン・ザン・ディン, ター・ホア・フォン

日本地質学会西日本支部第168回例会, Feb, 2017
テチス海東域とパンサラッサ海西域における前期三畳紀オレネキアン期のコノドント生層序

前川匠, 小池敏夫, 小松俊文, 重田康成

日本地質学会西日本支部第168回例会, Feb, 2017
XAFS法によるデボン紀‐石炭紀および白亜紀‐古第三紀境界層粘土中のTiとZrの局所構造解析:隕石衝突と大量絶滅の検証方法

鳥羽瀬翼, 鳥羽瀬翼, マッシモネスポロ, 吉朝朗, 本宮秀朋, 小松俊文, 前川匠, 奥部真樹, 有馬寛, 杉山和正

日本結晶学会年会講演要旨集, Nov 17, 2016
ベトナム北部ハーザン省のシーファイ地域に分布するトックタット層のフラスニアン・ファーメニアン境界について

浦川良太, 小松俊文, 高嶋礼詩, 前川匠, PHONG Nguyen Duc

日本古生物学会年会講演予稿集, Jun 24, 2016
三畳系田穂石灰岩から産出したオレネキアン期のコノドント化石群集における回復～適応放散

前川匠, 小池敏夫, 小松俊文, 重田康成

日本地質学会西日本支部第167回例会, Feb, 2016

Professional Memberships

May, 2021 - Present

The Geological Society of Japan
Mar, 2015 - Present

Tokyo Geographical Society
PALAEONTOLOGICAL SOCIETY OF JAPAN

Research Projects

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

科学研究費助成事業若手研究, 若手研究, 日本学術振興会, Apr, 2021 - Mar, 2025

前川匠
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

Nakatsuji Foresight Foundation, Jul, 2020 - Mar, 2022
The Induan-Olenekian boundary of the Lower Triassic successions of western North America and Southwest Japan

Fukada Grant-in-aid, Fukada Geological Institute, May, 2019 - Mar, 2020
Conodont biostratigraphy of the Lower Triassic Olenekian in the Tethyan and Panthalassan areas.

Tokyo Geographical Society, Jun, 2015 - May, 2016

Academic Activities

Fossils are fun

Planning, management, etc.

Osaka Museum of Natural History, Sep 28, 2024 - Oct 27, 2024
第54回特別展「自然史のイラストレーション」

Other

大阪市立自然史博物館, Feb 23, 2024 - May 26, 2024
第53回特別展「大阪アンダーグラウンドReturnsー掘ってわかった大地のひみつー」

Other

大阪市立自然史博物館, Dec 16, 2022 - Feb 26, 2023
テーマ展示「標本を未来に引き継ぐ～新収蔵資料展2022～」

Other

大阪市立自然史博物館, Jul 16, 2022 - Sep 25, 2022
テーマ展示「ジュニア自由研究・標本ギャラリー2021」

Planning, management, etc.

大阪市立自然史博物館・前川匠, Dec 11, 2021 - Feb 27, 2022
ミニ展示「和泉層群から41年ぶりに新種記載された異常巻きアンモナイト」

Planning, management, etc.

大阪市立自然史博物館・前川匠, Apr 23, 2021 - Jul 18, 2021
第51回特別展「大阪アンダーグラウンドー掘ってわかった大地のひみつー」

Other

大阪市立自然史博物館, Apr 24, 2021 - Jun 27, 2021

Social Activities

Type specimen of Gaudryceras izumiense (Ammonoidea, Cephalopod)

Guest

Osaka Museum of Natural History, Nov 24, 2023
Tomitaro Makino's herbarium specimen stored in Osaka Museum of Natural History

Edit

Osaka Museum of Natural History, Aug 2, 2023
Specimens of boring core from Osaka Plain

Edit

Osaka Museum of Natural History, Dec 14, 2022
Kogaito Ginjiro’s collection of bird's nests

Edit

Osaka Museum of Natural History, May 19, 2022
Specimens of butterfly and moth from world (Specimens with distinct form)

Edit

Osaka Museum of Natural History, Apr 21, 2022
Specimens of butterfly and moth from world (Largest size specimens)

Edit

Osaka Museum of Natural History, Mar 20, 2022
Herbarium specimens which are models of figures of some botanical picture book

Edit

Osaka Museum of Natural History, Oct 13, 2021
Paticular replica of an outcrop of melange

Edit

Osaka Museum of Natural History, Sep 2, 2021

Profile Information

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