Depends on how pedantic you want to be regarding the term "dinosaur" Dimetrodon and plesiosaurs for instance are reptiles but if you buy a pack of plastic dinosaurs for your kid the odds are damn near 100 percent those are gunna be in there. Not applicable to the T-Rex I know but it's like the whole debacle of "what counts as a berry" thing. Like sure a blackberry is an aggregate drupe but it is culturally a valid answer to "what's your favorite berry?"