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17 Out-of-Place Artifacts Said to Suggest High-Tech Prehistoric Civilizations Existed | Ancient Origins
![The London Hammer is a hammer made of iron and wood that was found in London, Texas in 1936. Part of the hammer is embedded in a limy rock concretion, leading to The London Hammer is a hammer made of iron and wood that was found in London, Texas in 1936. Part of the hammer is embedded in a limy rock concretion, leading to](https://external-preview.redd.it/6P20Ur48lMel1fGbF1LsBc1NXoEJuBjXSDTQE1OUxXc.jpg?auto=webp&s=a5bedbb033fc76fcd07e10069183fb52aac54829)
The London Hammer is a hammer made of iron and wood that was found in London, Texas in 1936. Part of the hammer is embedded in a limy rock concretion, leading to
Late Pleistocene to early Holocene high-quality quartz crystal procurement from the Valiente quarry workshop site (32°S, Chile, South America) | PLOS ONE
![The Italian record of the Cretaceous shark, Ptychodus latissimus Agassiz, 1835 (Chondrichthyes; Elasmobranchii) [PeerJ] The Italian record of the Cretaceous shark, Ptychodus latissimus Agassiz, 1835 (Chondrichthyes; Elasmobranchii) [PeerJ]](https://dfzljdn9uc3pi.cloudfront.net/2020/10167/1/fig-4-full.png)
The Italian record of the Cretaceous shark, Ptychodus latissimus Agassiz, 1835 (Chondrichthyes; Elasmobranchii) [PeerJ]
![The Oldest Human Footprints in North America Could Redefine Prehistory as We Know It—and It's All Thanks to These Tiny Seeds The Oldest Human Footprints in North America Could Redefine Prehistory as We Know It—and It's All Thanks to These Tiny Seeds](https://news.artnet.com/app/news-upload/2021/09/23footprints02-superJumbo.jpeg)