†Triadocidaris persimilis Bather 1909 (sea urchin)
Echinoidea - Euechinoidea - Triadocidaridae
PaleoDB taxon number: 270260
Belongs to Triadocidaris according to P. M. Kier 1977
Sister taxa: Triadocidaris giauensis, Triadocidaris immunita, Triadocidaris subsimilis, Triadocidaris suessii, Triadocidaris venusta
Ecology: epifaunal grazer-deposit feeder