Tooth remains of Chlamydoselachus (Chondrichthyes, Elasmobranchii) from the Tomioka Group (Lower to Middle Miocene) in Tomioka and Annaka City, Gunma Prefecture, Central Japan. Bulletin of Gunma Museum of Natural History, 5, 19–30
Analysis of Dental Formula based on 315 Fossil Teeth of Hexanchus sp. from the Miocene in the Chichibu basin, Central Japan. Bulletin of the Saitama Museum of Natural History, 15, 17–32