 I. exogyrarum was described by Fritsch in 1878 . It is a nomen dubium based on very poor material and was renamed Ponerosteus in 2000 . 
 I. exogyrarum was described by Fritsch in 1878 . It <a href='drop_aux' title='1'><mark>is</mark></a>a nomen dubium based on very poor material and was renamed Ponerosteus in 2000 . 
I. exogyrarum was described by Fritsch in 1878 . It a nomen dubium based on very poor material and was renamed Ponerosteus in 2000 .