| Citation | Rygg, B., 2002 Indicator species index for assessing benthic ecological quality in marine waters of Norway. NIVA Report SNO 4548-2002, 33p. |
| Ref. | 105742 Rygg, B., 2002 |
| Page | |
| Named Used as Valid | Echinocardium cordatum |
| Locality | |
| Distribution | Norway. |