What Is A Dinosaur And What Isn’t a Dinosaur?

There’s a lot of confusion out there about what is and isn’t a dinosaur. And you’d be forgiven for being kinda confused. Well, like an intrepid fossil hunter, we set out to dig up an answer, and what we found teaches us a lesson about how hard it is to build a picture of the past when you only have a few puzzle pieces and a lot about why we classify things the way we do.