Teen Archaeologist Finds a Tooth That's More Than 500,000 Years Old

iStock
iStock

A tooth belonging to an early human sub-species was unearthed recently in France—but the tooth fairy is about 560,000 years too late.

Phys.org reports that the rare discovery was made by a 16-year-old volunteer archaeologist during a dig inside a cave near Tautavel, a French commune in the Pyrenees near the Spanish border. Scientists say the tooth—a worn lower incisor—likely belonged to a member of the Homo heidelbergensis species, which lived about 700,000 to 200,000 years ago.

"These are certainly different from modern humans. They existed before Neanderthals,” Dr. Matthew Skinner, a paleoanthropologist from Britain’s University of Kent, tells phys.org. “They had quite large brains and fairly complex behavior but weren't modern in the way that we are.”

Using other evidence found in the cave, anthropologists were able to piece together a portrait of what life was like for prehistoric people who lived or frequented the area. They hunted reindeer, bison, and rhinos, and endured frigid and dry weather conditions.

Paleoanthropologists determined how old the tooth is by using dating methods on the soil it was found in. The tooth is about 100,000 years older than a skull of an early hominid dubbed the “Tautavel Man” that was discovered at the same site in 1971. To date, about 140 fossils of prehistoric human remains have been unearthed at Tautavel, which scientists say may have been a temporary shelter for hunters or a more permanent settlement.

[h/t phys.org]

After 110 Million Years, This Spider Fossil's Eyes Are All Aglow

© Changkun Park, Electron Probe Micro Analyzer, Korea Polar Research Institute
© Changkun Park, Electron Probe Micro Analyzer, Korea Polar Research Institute

A big, hairy spider is enough to give anyone a fright. So you can imagine what a set of eight glowing eyes attached to a body like that might do to an arachnophobe's psyche. One such spider was discovered recently by researchers, but don’t worry—the iridescent-eyed arachnid has been dead for 110 million years.

As Popular Science reports, this rare, fossilized specimen was found in South Korea’s Lower Cretaceous Jinju Formation. The find was unusual for a couple of reasons. For one, spiders are not usually preserved in rock because the soft-bodied creatures decay easily. It’s also not every day that you see a long-dead spider with glowing eyes. On top of that, researchers found two well-preserved examples of these spiders, which were described in a recent issue of the Journal of Systematic Palaeontology.

Both specimens belong to Lagonomegopidae, an extinct family that predated jumping spiders. The glow is caused by a layer of tissue called tapetum lucidum, which coats the spider’s eyes and reflects light, allowing the spider to hunt at night with ease. Many animals have it—including cats, dogs, horses, deer, raccoons, and some modern spiders—but this is the first paper to describe its existence in a fossilized spider. The tapetum is crescent-shaped and “looks a bit like a Canadian canoe,” according to Paul Selden, a geology professor at the University of Kansas and co-author of the paper.

“Because these spiders were preserved in strange silvery flecks on dark rock, what was immediately obvious was their rather large eyes brightly marked with crescentic features,” Selden said in a statement.

The fossilized spider
Paul Selden

Researchers now want to go back and take another look at similar spiders preserved in amber, which are far more common than spiders fossilized in rock. The challenge is determining whether those specimens also have a layer of tapetum lucidum coating their eyes.

“Amber fossils are beautiful, they look wonderful, but they preserve things in a different way,” Selden said. “Now, we want to go back and look at the amber fossils and see if we can find the tapetum, which stares out at you from rock fossils but isn’t so obvious in amber ones because the mode of preservation is so different.”

[h/t Popular Science]

A (Still-Sharp) Medieval Sword Was Pulled from a Sewer in Denmark

Pipe layer Jannick Vestergaard and engineer Henning Nøhr hold up the sword they found.
Pipe layer Jannick Vestergaard and engineer Henning Nøhr hold up the sword they found.
Nordjyllands Historiske Museum (Historical Museum of Northern Jutland)

If the legend of King Arthur and Excalibur is anything to go by, anyone who successfully extracts a sword in a stone will be treated like royalty. The fable doesn’t say anything about the reward one gets for removing a medieval weapon from feces, though.

As Smithsonian reports, a pipe layer and an engineer recently found a sword from the medieval era while doing construction work on a sewer in Aalborg, Denmark’s fourth-largest city. The relic was plucked from a layer of waste that had accumulated atop an old slab of pavement that once ran through the city.

Most remarkably, the sword was still intact—and the blade still sharp. It’s about 3.5 feet long and of extremely high quality, according to archaeologists. The sword may have been used between 1100 and 1400, but the likeliest explanation is that it got separated from its owner sometime in the 14th century. “Findings from here have always pointed to the 1300s, so the sword must have ended up in the earth in this century,” archaeologist Kenneth Nielsen said in a translated statement.

The sword next to a tape measure
Nordjyllands Historiske Museum (Historical Museum of Northern Jutland)

It’s rare for such an important historical artifact to turn up in such an unlikely—and unhygienic—place. Swords were valuable and highly prized possessions, and they were treated as such. They were typically buried with their owners, but no graves are situated above the sewer where the weapon was found.

The country’s history offers some clues about what may have transpired, though. In the 1300s, power struggles and internecine war were common throughout Denmark. “The best explanation we can come up with is that the owner of the sword was defeated in a battle,” Nielsen told The Local Denmark. “In the tumult, it was then trod down into the layer of mud that formed the street back then.”

Similarly, a 14th-century sword was found in a Polish peat bog in 2017, and archaeologists suspect the owner either sunk into the marsh and met a grisly end, or merely dropped his weapon and was unable to retrieve it.

While these questions will likely remain unanswered, members of the public will have the chance to admire the Danish "sewer sword" in all its glory at the Aalborg Historiske Museum (Aalborg Historical Museum), which is located near the site where the sword was found. Fortunately for future visitors, it will be cleaned and preserved first.

[h/t Smithsonian]

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