| Citation | Madeira, P., A. Kroh, R. Cordeiro, R. Meireles and S.P. Avila, 2011 The fossil echinoids of Santa Maria Island, Azores (Northern Atlantic Ocean). Acta Geologica Polonica 61(3):243-264 | 
| ссылка | 106593 Madeira, P., A. Kroh, R. Cordeiro, R. Meireles and S.P. Avila, 2011 | 
| Page | 250 | 
| Named Used as Valid | Sphaerechinus granularis | 
| Местонахождение | |
| Distribution | Eastern Atlantic and the Mediterranean. |