Echinocardium cordatum

Echinus cordatus Pennant, 1777
Amphidetus (Amphidotus) chordatus Pennant, 1777
Spatangus arcuarius de Lamarck, 1816
Echinocardium sebae, Gray, 18??
Amphidetus kürtzii Girard, 1852

Common name:
Common Heart Urchin [English]