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These may be the same, accepted as Echinocardium mortenseni. Echinocardium laevigaster A. Agassiz Echinocardium mortenseni Thiéry, 1909 Echinocardium pennatifidum Norman, 1868

Marine species with multiple names. http://www.marinespecies.org/aphia.php?p=taxlist&pid=123175&rComp=%3E=&tRank=220

There is a list. Romanfall ( talk) 07:37, 18 July 2010 (UTC) reply