Monilechinus portucalensis Pereira, 2010, holotype MG 25884a ( Museu Geológico, Lisboa, Portugal), Middle Miocene of Mutela, Lower Tagus Basin, Portugal.  Lateral views. Test diameter 9.3 mm  from Pereira, P. 2010. Echinoidea from the Neogene of Portugal Mainland. Palaeontos 18, 1-191.