 I. bernissartensis , described by George Albert Boulenger in 1881 , is the type species for the genus . This species is best known for the many skeletons discovered in Bernissart , but is also known from remains across Europe . David Norman suggested that it includes the dubious Mongolian I. orientalis , but this has not been followed by other researchers . 
 I. bernissartensis , described by George Albert Boulenger in 1881 , <a href='drop_aux' title='1'><mark>is</mark></a>the type species for the genus . This species is best known for the many skeletons discovered in Bernissart , but is also known from remains across Europe . David Norman suggested that it <a href='uninflect' title='2'><mark>includes</mark></a> the dubious Mongolian I. orientalis , but this <a href='been_done' title='3'><mark>has</mark></a> not been followed by other researchers . 
I. bernissartensis , described by George Albert Boulenger in 1881 , the type species for the genus . This species is best known fa the many skeletons discovered in Bernissart , but is also known from remains across Europe . David Norman suggested dat it include da dubious Mongolian I. orientalis , but this done not been followed by other researchers .