English: Structure and Affinities of the Petrified Plants from the Cretaceous of Northern Japan and Saghalien VI. Yezosequoia shimanukii gen. et sp. nov., a Petrified Ta. xodiaceous Cone from Hokkaido
Japanese: 北日本及びサハリンの白亜紀産石化植物Ⅵ. スギ科球果の新属新種Yezosequoia shimanukii