 I. orientalis , described by A. K. Rozhdestvensky in 1952 , was based on poor material , but a skull with a distinctive arched snout that had been assigned to it was renamed Altirhinus kurzanovi in 1998 . At the same time , I. orientalis was considered to be a nomen dubium because it cannot be compared to I. bernissartensis . 
 I. orientalis , described by A. K. Rozhdestvensky in 1952 , was based on poor material , but a skull with a distinctive arched snout <a href='null_relcl' title='1'><mark>that</mark></a><a href='been_done' title='2'><mark>had</mark></a> been assigned to it was renamed Altirhinus kurzanovi in 1998 . At the same time , I. orientalis was considered to be a nomen dubium because it cannot be compared to I. <a href='negative_concord' title='3'><mark>bernissartensis</mark></a> . 
I. orientalis , described by A. K. Rozhdestvensky in 1952 , was based on poor material , but a skull with a distinctive arched snout done been assigned to it was renamed Altirhinus kurzanovi in 1998 . At the same time , I. orientalis was considered to b a nomen dubium because it cannot bbcompared to I. no bernissartensis .