An sake fara tonowa a Walcott Quarry ta Geological Survey na Kanada a ƙarƙashin rinjayar masanin trilobite Harry Blackmore Whittington, kuma an kafa sabon dutsen, Raymond, kimanin mita 20 sama da Fossil Ridge. Whittington, tare da taimakon ɗaliban bincike Derek Briggs da Simon Conway Morris na Jami'ar Cambridge, sun fara sake nazarin Burgess Shale, kuma sun bayyana cewa fauna da aka wakilta sun bambanta da ban mamaki fiye da yadda Walcott ya gane.
Derek Briggs da kuma Simon Conway Morris