†Gracilechinus gracilis nysti Cotteau 1880 (sea urchin)
Echinoidea - Camarodonta - Echinidae
Alternative combination: Echinus nysti
Belongs to Gracilechinus gracilis according to J. Geys 1989
Sister taxa: none
Ecology: epifaunal grazer-deposit feeder
Distribution: found only at E17-E18 motorway, western verge (Miocene of Belgium)