†family Bothriocidaridae Kelm 1904 (sea urchin)
Echinoidea - Bothriocidaroida - Bothriocidaridae
Parent taxon: Bothriocidaroida according to P. M. Kier 1966
Sister taxa: Neobothriocidaris, Unibothriocidaris
Subtaxa: Bothriocidaris
Type: Bothriocidaris
Ecology: slow-moving low-level epifaunal detritivore
Distribution:
• Ordovician of Estonia (4 collections), Latvia (1), the Netherlands (1), United States (8: Illinois, Iowa, Iowa, Minnesota, Oklahoma, illinois)
Total: 14 collections each including a single occurrence