The Echinoid Directory
Proterocidaris giganteus Koninck, 1882; Marbre Noire, Lower Carboniferous, Denee, Belgium. Apical view, from Kier, P. M. 1962. Redescription of some Lower Carboniferous echinoids from Belgium. Institut royal des Sciences naturelles de Belgique, Bulletin 38(5), 1-12, pls 1-6 (pl. 1).
Diameter of test 220 mm.