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Bock, P. (2025). World List of Bryozoa. Semibugula birulai Kluge, 1929. Accessed through: Marine Species Traits editorial board (2025) Marine Species Traits at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=147151 on 2026-03-03
Marine Species Traits editorial board (2026). Marine Species Traits. Semibugula birulai Kluge, 1929. Accessed at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=147151 on 2026-03-03