Below are the images and information that appears in the inset titled "Tyrannosaur Ancestors" located in the upper left corner of the poster.  These species are early meat-eaters that later evolved into the tyrannosaurs.  Note their similarities to their famous descendents.  The are bipedal; they walk on their powerful hind legs and use their heavy tails to maintain balance.  Their forearms are short and comparatively weak.  All have small heads.  The massive heads of the tyrannosaurs will develop later.
   Their is a page devoted to each species, which provides more detail.  The primary purpose of this page is to show all of them together in chronological order.