[Skull of fossil sirenian from Takasato, Fukushima Prefecture.] In: Y. Hasegawa (ed.), [Study on fossil marine mammals from Japan. (Subject of study) Studies on biostratigraphy and paleontology of Cenozoic marine mammals.]

Japan, Ministry of Education, Aid for Scientific Study, Synthetic Study A, Subject No. 61304010: 100-101. March 1988.