@article{oai:kgwu.repo.nii.ac.jp:00000491,
 author = {二上, 政夫 and FUTAKAMI, Masao},
 journal = {川村学園女子大学研究紀要, The journal of Kawamura Gakuen Woman's University},
 month = {Mar},
 note = {Four species of the collignoniceratid ammonites from the Coniacian of Hokkaido are described, of which two are new, viz. Prinocycloceras matsumotoi and P. obatai. On this occasion the phylogenetic relationships of some collignoniceratid genera are discussed., Four species of the collignoniceratid ammonites from the Coniacian of Hokkaido are described, of which two are new, viz. Prinocycloceras matsumotoi and P. obatai. On this occasion the phylogenetic relationships of some collignoniceratid genera are discussed.},
 pages = {257--270},
 title = {北海道白亜系コニアシアン階から産するコリンニョニケラス科のアンモナイト},
 volume = {2},
 year = {1991},
 yomi = {フタカミ, マサオ}
}