Magnapaulia - another giant hadrosaur just slightly smaller than Shantungosaurus
Torosaurus (Adam) - big ceratopsian specimen that may have rivaled or even exceeded Triceratops
Zygolophodon (Z. borsoni) - giant species of Zygolophodon that weighed about 16 tons, smaller than Palaeoloxodon but still one of the largest non-sauropods
Eremotherium - it's bigger than Megatherium but less known I guess (I'm running out of ideas)