@article{oai:niigata-u.repo.nii.ac.jp:00006822,
 author = {Fujikawa, Masayuki and Suzuki, Chisato},
 journal = {Science reports of Niigata University. (Geology), Science reports of Niigata University. (Geology)},
 month = {Mar},
 note = {Four ammonoid species, Thalassoceras? sp., Artinskia sp., Agathiceras sp., and Paragastrioceras? sp., are described from the lower part of the Takakurayama Formation in the Takakurayama area, Abukuma Mountains, northeast Japan. This fauna indicates an Early Permian (Sakmarian-Artinskian) age. Three of these species except for Agathiceras sp. are described from the Takakurayama Formation for the first time.},
 pages = {61--72},
 title = {Early Permian ammonoids from the Takakurayama area, Abukuma Mountains, northeast Japan},
 volume = {26},
 year = {2011}
}