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|How it didn't happen|
The Ica stones are allegedly ancient artifacts that were "discovered" in Peru in the 1960s. Among other things, they depict dinosaurs, surgery, and modern technology, so they have been used as "evidence" by Young Earth creationists and proponents of the ancient astronauts meme (most notably Erich von Däniken), despite all indications of being a modern forgery.
For example, Ceratopsians such as Triceratops did not exist at the same time or place as the long-necked Sauropods (both dinosaurs are depicted in the stones in the same location). There are also some errors in the anatomy of the Tyrannosaurus rex on the stones: it is shown standing upright, which at the time the stones were found was believed to be how the T. rex walked, but more recent research shows they walked by keeping their spine horizontal.
- See the Wikipedia article on Ica stones.
- The Case of the Ancient Astronauts, YouTube, a 1977 NOVA documentary dealing with von Däniken's claim that contains an interview with the guy who actually made them (segment starts after the 42 minute mark)
- Ica stones, entry in The Skeptic's Dictionary
- Claim CH710.1: Ica stones show that humans and dinosaurs coexisted, talk.origins' Index to Creationist Claims