Bistahieversor – Prehistoric Fury

Bistahieversor was first described in 1990 as a specimen of Aublysodon (another Tyrannosaur). In the year 2000 Bistahieversor was redescribed as a new species of Daspletosaurus. But in 2010 it was redescribed again, but this time Bistahieversor sealeyi was the name for this new genus and species of a more generalised Tyrannosaur. Bistahieversor brings with...