A new Pliocene fur seal (Carnivora: Otariidae) from the Senhata Formation on the Boso Peninsula, Japan - 1992
Fossil ophiuroids (Ophiura sarsii Lütken, 1854) from the Pleistocene Ichijuku Formation (Kazusa Group), Chiba Prefecture, Central Japan - 1993
Two parasitic wasps from Aptian (Lower Cretaceous) Choshi amber, Chiba, Japan - 1994