(of)Yokoyama, M. (1911). Some Tertiary fossils from the Miike coal-field. <em>Journal of the College of Science, Imperial University, Tokyo.</em> 27(20): 1-16.[details]
DecaNet eds. (2025). DecaNet. Branchioplax pentagonalis (Yokoyama, 1911) †. Accessed through: Marine Species Traits editorial board (2025) Marine Species Traits at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=1723958 on 2025-05-24
Marine Species Traits editorial board (2025). Marine Species Traits. Branchioplax pentagonalis (Yokoyama, 1911) †. Accessed at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=1723958 on 2025-05-24
original description(of)Yokoyama, M. (1911). Some Tertiary fossils from the Miike coal-field. <em>Journal of the College of Science, Imperial University, Tokyo.</em> 27(20): 1-16.[details]