Schuchert, P. (2021). World Hydrozoa Database.
Halicreas papillosum Vanhöffen, 1902. Accessed through: Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2021) European Register of Marine Species at: http://marbef.org/data/aphia.php?p=taxdetails&id=117618 on 2024-05-20
Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2024). European Register of Marine Species.
Halicreas papillosum Vanhöffen, 1902. Accessed at: https://marbef.org/data/aphia.php?p=taxdetails&id=117618 on 2024-05-20