@article{oai:niigata-u.repo.nii.ac.jp:02000005,
 author = {Sakai, Yusuke and Ito, Tsuyoshi and Ibaraki, Yousuke and Matsuoka, Atsushi},
 journal = {Science reports of Niigata University. (Geology)},
 month = {Mar},
 note = {Sterile fern fronds comparable to Birisia onychioides (Vassilevskaja and Kara-Mursa) Samylina [sense Kimura] and assignable to Cladophlebis sp. were found from the Lower Cretaceous Tetori Group near Ichiburi in the Itoigawa area, Niigata Prefecture, central Japan. This paper describes these specimens with photographs and line drawings for the first time in Niigata Prefecture. Birisia is one of the important elements indicative of the Siberian paleofloristic province. It is common in the Oguchi and Akaiwa floras of Barremian?Aptian age but has not been found in the younger Kitadani (or Tamodani) Flora of Aptian age in the Tetori Group. Lithostratigraphic assignment of the plant fossil-bearing sequence in the study area is discussed.},
 pages = {33--43},
 title = {Plant fossils from the Lower Cretaceous Tetori Group in the Itoigawa area, Niigata Prefecture, central Japan},
 volume = {35},
 year = {2020}
}