Hatai, K. M. (1938). The Tertiary and Recent Brachiopoda of Northeast Honsyu, Japan. <em>Saito Ho-on Kai Museum Research Bulletin.</em> 16: 89–246, pl. 16–20.[details]
Verhoeff, T. (2024). World Brachiopoda Database. Frenulininae Hatai, 1938. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=235268 on 2024-11-23
original descriptionHatai, K. M. (1938). The Tertiary and Recent Brachiopoda of Northeast Honsyu, Japan. <em>Saito Ho-on Kai Museum Research Bulletin.</em> 16: 89–246, pl. 16–20.[details]