Classic Dinosaur Rivals

Here is a list of some of those classic dinosaur rivalries that we all know and love. Allosaurus vs Ceratosaurus Perfect scenario where two apex predators live at the same time in the same area. [img]http://4.bp.blogspot.com/-N-CGH-Q8C6M/Tay4OVMM57I/AAAAAAAAAG4/5YWYlskvN8s/s320/imagen%2Bp%2Bface.jpg[/img] Allosaurus vs Stegosaurus The classic predator prey set-up. [img]http://i1213.photobucket.com/albums/cc476/mmermaidd/GK/Allosaurus_vs_Stegosaurus.jpg[/img] Spinosaurus vs Carcharodontosaurus The perfect clash of the titans. [img]http://3.bp.blogspot.com/-5aw1t_RJoLA/ThDoag7EHXI/AAAAAAAAAkQ/GbJ8QN3bEBg/s400/Carcharodontosaurus-vs-spinosaurus.jpg[/img] Giganotosaurus vs Argentinosaurus Huge predator. Huge prey. Final Outcome? Who Knows! [img]http://2.bp.blogspot.com/_K5URYlf_oPE/SpRvgVSunBI/AAAAAAAAAD0/p7P7aO45eD8/s400/Giganotosaurus+x+young+Argentinosaurus.jpg[/img] Tyrannosaurus rex vs Triceratops Probably the most famous and perhaps the ultimate dinosaur rivalry! [img]http://supermonsterfightclub.webs.com/last%20trike%20v%20rex%20pic.jpg[/img] What do ya think? Are these classic rivalries or what? Any you guys can think of and think are worth mentioning? Include a pic if possible.