MolluscaBase name details
original description
Adams, A. (1850). Monographs of <i>Cyclostrema</i>, Marryat, and <i>Separatista</i>, Gray; two genera of gasteropodous mollusks. <em>Proceedings of the Zoological Society of London.</em> (1850) 18: 41-45., available online at https://biodiversitylibrary.org/page/12858717
page(s): 43; note: As C. planorbula. [details]