Kroh, A.; Mooi, R. (2025). World Echinoidea Database. Proterocidaris de Koninck, 1882 †. Accessed at: https://www.marinespecies.org/echinoidea/aphia.php?p=taxdetails&id=703973 on 2025-05-26
original description(ofEupholidocidaris Kier, 1956 †)Kier, P. M. 1956. A New Genus of Echinoid from the Palaeozoic of Ireland. Geological Magazine 93, 15-17.[details]