Born in 1979. Born in 1943. Doctor of Science, Professor Emeritus of the University of Tokyo, Specially invited researcher at the University Museum. Mineralogy, crystallography. His books include "Siebold Natural History: The Story of Stones and Plants" (Chishobo) and "Memory of Stones-Hiroshima Nagasaki" (Chishobo). Doctor of Science, Researcher at the National Museum of Nature and Science. Animal phylogeny, phylogeography.