A new nearly complete skeleton of Camarasaurus - 1996
Miocene Otariid (Allodesminae) scapula from Haraichi Formation, Tomioka Group, Gunma, Japan - 2000
A possible spinosaurid tooth from the Sebayashi Formation (Lower Cretaceous), Gunma, Japan - 2003
A new specimen of ziphiid (Cetacea) from the Middle Miocene of Shiga-mura, Central Japan - 2003
A hadrosaurid vertebra from the Ashizawa Formation, Futaba Group, Fukushima, Japan - 2003
An outline of the Miocene cetotheres of Japan - 2004
A middle Miocene Mysticeti from the Bessho Formation, Nagano Prefecture, central Japan - 2004
Systematics and evolution of Dromaeosauridae (Dinosauria, Theropoda) - 2004
Fossil finless propoise, Neophocaena phocaenoides, from the Seto Island Sea, Japan - 2005
Fossil physeterid from the Miocene Urizura Formation, Taga Group, Ibaraki, Japan - 2006
A method for distinguishing dromaeosaurid manual unguals from pedal "sickle claws - 2007
A fossil cetothere from the Lower Miocene Yoshino Formation, Katsuta Group, Okayama, Japan - 2008
A Pleistocene delphinid from the Ichijiku Formation, Chiba Prefecture, Japan - 2008
A fossil mysticeti from the Plio-Pleistocene Sarumaru Formation, Nagano Prefecture, Japan - 2009
A fossil mysticete from the middle Miocene Bihoku Group, Hiroshima, Japan - 2010
Fine sculptures on a tooth of Spinosaurus (Dinosauria, Theropoda) from Morocco - 2010
An additional fossil mysticete form the Middle Bihoku Group, Hiroshima, Japan - 2011
A sub-adult growth stage indicated in the degree of suture co-ossification in Triceratops - 2011
A mysticete fossil from the Middle Miocene Omori Formation, Shimane Prefecture, Japan - 2015