†Heterodiadema libycum Agassiz and Desor 1846 (sea urchin)
Echinoidea - Euechinoidea - Pseudodiadematidae
PaleoDB taxon number: 167187
Alternative combinations: Hemicidaris libyca, Heterodiadema lybicum
Belongs to Heterodiadema according to R. Berndt 2003
Sister taxa: Heterodiadema buhaysensis, Heterodiadema ornatum
Ecology: epifaunal grazer-deposit feeder