English: Structure and Affinities of the Petrified Plants from the Cretaceous of Northern Japan and Saghalien X Two Sequoia-like Cones from the Upper Cretaceous of Hokkaido
Japanese: 北日本及びサハリンの白亜紀産石化植物Ⅹ 北海道白亜紀産に二つのセコイア様球果