6. Glytodon Shell
A what I hear you say? The Gytodon was an ancient species that died out about 10,000 years ago and was closely related to the armadillo. While it’s not unusual to find fossils of the extinct creature, a shell in perfect condition is definitely strange. So when an Argentinian farmer found this one in a sewer near the property he was working on, it quickly became an internet sensation.
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