The First Evidence of Predatory or Parasitic Drilling in Stylophoran Echinoderms

Drillholes are common in many different echinoderm classes, but have yet to be reported in homalozoans. A borehole in the Late Ordovician echinoderm Enoploura is the first evidence of drilling in Stylophora. The level of preservation and environ− mental setting suggest this drilling occurred while the organ− ism was alive, thus supporting a predatory or parasitic inter− pretation.