- 2020 - 2023 二枚貝の日輪解析から探る鮮新世末以後における黒潮沿岸海域の季節変動
- 2020 - 2023 Changes in the environments and biological communities revealed from the sediment core of Uranouchi Inlet Bay, Kochi during Anthropocene
- 2013 - 2016 Origin of modern species of mollusks as inferred from their fossils
- 2011 - 2013 Reconstruction of sub-bottom section of geologic methane-seep site - variety of seep activity indicated by fossil chemosynthetic communities
- 2010 - 2012 Establishment of modern mollusk associations as viewed from earliest occurrence of modern species:Their timing and paleoenvironmental background
- 2010 - 2012 Paleoenvironments reconstructed from formation processes of recent and fossil oyster reefs, and the paleoecological evolution of oysters
- 2008 - 2010 Palaeoecological change of fossil echinoids from Japan
- 2007 - 2009 Diversification events of marine, brackish and freshwater bivalves in the Early Cretaceous
- 2006 - 2009 Evolution of chemosynthetic communities since the Cretaceous-with special reference to sub-bottom structure of methane-seepage habitats
- 2004 - 2005 Evolutionary paleoecology of the Cretaceous brackish-water bivalves of southwest Japan, and the origin of the Modern Evolutionary Fauna
- 1999 - 2004 海底地圏生態系と生物進化史の研究
- 2000 - 2002 CLARIFICATION OF HABITAT EXPANSION DURING THE EVOLUTIONARY HISTORY OF BIVALVES
- 1999 - 1999 白亜紀の炭素循環と古生物多様性の変動
- 1997 - 1999 PALEOEOLOGY OF MARINE BENTHIC ANIMALS AS VIEWD FROM PHYSICAL DISTURBANCE (2000)
- 1993 - 1994 Community structures of the fossil benthic associations : Their stability and reformation
- 1993 - 1993 中生代以降の内生二枚貝類の形態および古生態の進化
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