Question: If We were to find a great big bone, what would We think it was? To truly understand the puzzle, We have to assume that nobody had ever heard of dinosaurs at the time of the discovery. Nobody, Reader or Rhino.
Answer: We’d have no idea what it was. Mr. Pennyston didn’t, and asked Dr. Robert Plot at Oxford. In 1676 Dr. Plot guessed it was from an elephant, or perhaps a thigh bone from a giant human, maybe 10 feet tall. He was a learned man for his day, and his every hunch was wrong.
It’s hard to dial back our understanding of matters to an age when witches were still being executed. (see: Salem, 1692).