Cast vs. Original: What Are Museum Dinosaurs Really Made Of?
When you wander through the halls of a natural history museum, marveling at towering Tyrannosaurus rex skeletons or the impressive wingspan of a Quetzalcoatlus, have you ever wondered what you’re looking at? Are these the actual fossilized remains of creatures that lived millions of years ago, or something else entirely? The answer is more complex—and ...









