 Although sometimes interpreted as the result of a single catastrophe , the Bernissart finds instead are now interpreted as recording multiple events . According to this interpretation , at least three occasions of mortality are recorded , and though numerous individuals would have died in a geologically short time span ( ? 10 – 100 years ) , this does not necessarily mean these Iguanodon were herding animals . 
 Although sometimes interpreted as the result of a single catastrophe , the Bernissart <a href='uninflect' title='1'><mark>finds</mark></a> instead are now interpreted as recording multiple events . According to this interpretation , at least three occasions of mortality are recorded , and though numerous individuals would <a href='been_done' title='2'><mark>have</mark></a> died in a geologically short time span ( ? 10 – 100 years ) , this <a href='uninflect' title='3'><mark>does</mark></a> not necessarily mean these Iguanodon <a href='uninflect' title='4'><mark>were</mark></a> herding animals . 
Although sometimes interpreted as da result of a single catastrophe , tdaBernissart find instead are now interpreted as recording multiple events . According to this interpretation , at least three occasions of mortality are recorded , and doe numerous individuals would done died in a geologically short time span ( ? 10 – 100 years ) , this do not necessarily mean these Iguanodon was herding animals .