As Mayor shows, the Greeks and Romans were well aware that a different breed
of creatures once inhabited their lands. They frequently encountered the
fossilized bones of these primeval beings, and they developed sophisticated
concepts to explain the fossil evidence, concepts that were expressed in
mythological stories. . . .
Like their modern counterparts, the ancient fossil hunters collected and
measured impressive petrified remains and displayed them in temples and
museums; they attempted to reconstruct the appearance of these prehistoric
creatures and to explain their extinction. . . .
Not the one I'm referring to. Which I just looked up and got the region wrong -- it was in Mesopotamia. It was an actual museum showing ancient artifacts in a building, 2,500 years ago. Some of the things in that museum were an additional 1,500 years old at the time they were on display.
It's a funny story because the modern archeologists who dug it up were very confused by finding objects from different regions and separated by hundreds or thousands of years, all in the same layer.