The discovery may push back the emergence of the reptiles that once ruled the Earth, and clarify how dinosaurs like the Triceratops and Stegosaurus emerged. By Asher Elbein A dog-size reptile ...

told CNN in May that Apex was “an important dinosaur fossil,” especially since there are “far fewer good (Stegosaurus) skeletons than other famous dinosaurs like T. rex and Triceratops.” ...