User blog comment:TheReturnOfTheKing/Can we replace T. rex? Should we?/@comment-7690264-20130818194636/@comment-5870856-20130822174331

Edaphosaurus was a herbivore, but I get your point. Dimetrodon was pretty cool. And heck, what about rauisuchians? Like Fasolasuchus, which might have been bigger than Spinosaurus!!