Bock, P. (2024). World List of Bryozoa. Cyclotrypa carbonaria (Ulrich, 1884) †. Accessed through: Marine Species Traits editorial board (2024) Marine Species Traits at: https://www.marinespecies.org/traits./aphia.php?p=taxdetails&id=1410681 on 2024-10-06
Marine Species Traits editorial board (2024). Marine Species Traits. Cyclotrypa carbonaria (Ulrich, 1884) †. Accessed at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=1410681 on 2024-10-06