Up until 3.5 million years ago, these enormous sharks measuring up to 60 feet long swam throughout Earth's oceans while sporting teeth as large as human hands.

Construction of a sports complex in Vienna turned up a mass grave filled with at least 129 ancient Roman soldiers that had been sitting right underneath a soccer field.

In all, workers uncovered at least 4,000 coins of indeterminate age and provenance as well as 49 bars weighing one kilogram each.

Though his legend can't compete with his son's, Gordias is famous for founding Gordion, the capital of the Phrygian kingdom, and for creating the supposedly-unbreakable Gordian Knot that was eventually broken by Alexander the Great.

This could have been the home of the V Cohort of the Vigiles, the firefighters and policemen of ancient Rome who were first organized under Emperor Augustus in 6 C.E.

This box-style sarcophagus from the city's Greek period contained a skeleton as well as several coins featuring depictions of wrestlers.

Made of limestone and marked by several inscriptions and design flourishes, this altar was likely the gift of a soldier or government official, a theory bolstered by the fact that this site once hosted a Roman fort.

The White Star Line launched the Olympic, the Titanic, and the Britannic in the early 1910s, but within six years, all three of the luxurious ocean liners had been involved in wrecks — and over 1,500 passengers were dead.

Though researchers have determined that the stone's inscription was written in Old Norse, they haven't been able to decipher more than its opening words thus far, prompting them to call in a runestone expert in order to solve this baffling mystery.

It was recently discovered that the artifact that Steve Martin of Atascosa County had been keeping on his desk was a still-active artillery shell from a Civil War Parrott rifle.

Known as the "Demon Cavefish," this bizarre creature was officially christened Demogorgonichthys arcanus, in reference to the Demogorgon monster from Netflix's Stranger Things.

Researchers were even able to determine that they're most likely ptarmigans, with one brooding over its eggs and the other spreading its wings in flight.