Neil Jam is one of my favorite cartoonists. His recent book, a collection of the mini comics upon which he's built his reputation, is simply titled Neil Jam, and its cover features a T. rex rendered in his iconic style.
He's also got a great frameable print featuring his T. rex available. Although now that I look at the above image again, maybe it's an Allosaurus. Those are some big arms with three-fingered hands, after all.