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Ian Cartwright
Ian Cartwright

An 88,000-Year-Old Middle Finger May Change What We Know About Human Migration

Ian Cartwright
Ian Cartwright

A middle finger might change what we thought we knew about human migration from Africa. As Gizmodo reports, a new study in Nature Ecology and Evolution analyzes what may be the oldest modern human fossil outside of Africa and the Levant (modern-day Israel, Lebanon, Syria, and Jordan). Found in an ancient lake bed in the Arabian desert, the bone has been dated to 88,000 years ago, indicating that human migration from Africa may have started much earlier than previously thought.

Previous research has suggested that Homo sapiens populations migrated out of Africa and into Eurasia (perhaps thanks to climate change) in one big wave around 60,000 years ago. The fossilized finger bone, about an inch long, indicates the story might be more complicated.

A paleontologist with the Saudi Geological Survey, Iyad Zalmout, found the bone in 2016. He and his fellow researchers created 3D scans of the bone and compared them with other finger bones from Homo sapiens, Neanderthals, and modern primates like gorillas to determine that it is, in fact, a human bone. They then dated the fossil using uranium series dating, a measure of the bone's ratio of radioactive elements, to arrive at an estimated age of roughly 88,000 years old. They also found animal fossils and sediment at the site to be around 90,000 years old.

A surveyor stands in the desert.
The area in Saudi Arabia where the finger was found.
Klint Janulis

At that time, the area in the Nefud Desert where the bone was found would have been semi-arid grasslands surrounding a freshwater lake, a more hospitable climate than it is today. At some parts during this era, the Red Sea between Africa and the Arabian Peninsula would have been low enough to make it essentially just a big river, so humans could have crossed there, as a related article in the journal by anthropologist Donald Henry notes.

Several scientists told Gizmodo that it's possible that the bone isn't human at all—it could belong to a relative of Homo sapiens—and that the authors of the new study are overstating the significance of their finding, so the analysis is somewhat controversial.

However, other evidence has pointed to an earlier African exit date for humans. In 2015, scientists in China discovered human teeth they dated to 80,000 years ago, though they weren't able to date the bone directly—instead, they analyzed the teeth's surroundings. In January 2018, scientists announced that they had found a partial jawbone in an Israeli cave dating back at least 177,000 years.

"The ability of these early people to widely colonize this region [of Arabia] casts doubt on long held views that early dispersals out of Africa were localized and unsuccessful," said lead author Huw Groucutt, of the University of Oxford and the Max Planck Institute for the Science of Human History, in a statement.

[h/t Gizmodo]

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Stefan Sauer, AFP/Getty Images
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Stones, Bones, and Wrecks
13-Year-Old Amateur Archaeologist Discovers the Buried Treasure of a Danish King
Stefan Sauer, AFP/Getty Images
Stefan Sauer, AFP/Getty Images

In January, amateur archaeologist René Schön and his 13-year-old student Luca Malaschnitschenko were scouring a field on an island in the Baltic Sea when something small and silver triggered their metal detector. What they initially thought was aluminum trash turned out to be a coin from a 10th-century treasure hoard that once belonged to a Danish king, AP reports.

Schön and Malaschnitschenko discovered the site on the eastern German island of Ruegen, but it wasn't until mid-April that state archaeologists uncovered the hoard in its entirety. Both of the amateur archaeologists were invited back to take part in the final dig, which spanned 4300 square feet.

The treasure trove includes pearls, jewelry, a Thor's hammer, and about 100 silver coins, with the oldest dating back to 714 CE and the most recent to 983 CE. Experts believe the collection once belonged to the Viking-born Danish king Harald "Harry" Bluetooth, who abandoned his Norse faith and brought Christianity to Denmark.

Pile of silver coins.
Stefan Sauer, AFP/Getty Images

Threatened by a rebellion led by his son, the king fled Denmark in the late 980s—around the same time the silver hoard was buried—and took refuge in Pomerania, on the southern coast of the Baltic Sea. He died there in 987.

Harry Bluetooth derived his nickname from his bluish dead tooth. Today his legacy lives on in the Swedish Bluetooth technology that bears his name. The symbol for the tech also uses the runic characters for his initials: HB.

According to the archaeologists who worked there, the dig site represents the largest trove of Bluetooth coins ever discovered in the southern Baltic region.

[h/t AP]

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Aaron Deter-Wolf and the Tennessee Division of Archaeology
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Stones, Bones, and Wrecks
This May Be the Oldest Tattoo Kit in the World
Aaron Deter-Wolf and the Tennessee Division of Archaeology
Aaron Deter-Wolf and the Tennessee Division of Archaeology

Tattooing is an ancient art, but it has left only ephemeral traces in the archaeological record. Examples of mummies with ink-decorated skin do exist—such as Ötzi the Iceman and the Siberian Ice Maiden—but they're rare. And archaeologists are only just beginning to distinguish tattoo needles from other tools that were used for tasks like working leather or weaving baskets.

Despite those challenges, a pair of researchers thinks they've identified what could be the world's oldest tattooing toolkit: a set of pointy, ink-stained needles that were carved out of wild turkey bones and then buried in a Native American grave at least 3600 years ago.

The burial was found west of Nashville, Tennessee, at a riverside campsite called the Fernvale site, which had been used by prehistoric hunter-gatherers for centuries. The settlement was excavated to make way for a bridge in 1985, but archaeologists at the time did not fully analyze the findings. The set of bone needles, pigment-filled half-shells, and stone tools were collectively labeled a toolkit and put into storage, where they spent the next three decades.

"It was one of these situations where it went into a collection and nothing was done with it," says Aaron Deter-Wolf, an archaeologist with the Tennessee Division of Archaeology and an expert in ancient tattoos.

3600 year old tattoo needles
Aaron Deter-Wolf

Deter-Wolf teamed up with Tanya Peres, a zooarchaeologist at Florida State University, to take a fresh look at the set of artifacts. They were initially interested in the toolkit because it resembled a medicine bundle—a collection of artifacts that was bound together to act like a portable shrine in more recent Native American cultures. But after examining the objects, the researchers thought they might be dealing with a tattoo kit.

"By the arrival of the Europeans, virtually every Native American group in the Great Plains and the Eastern Woodlands practiced tattooing," Deter-Wolf tells Mental Floss. "If it's something that widespread and that important, we suspect that it is very deeply rooted in Native American history."

Their theory got a boost from another study published last year, in which Christian Gates St-Pierre, an archaeologist at the University of Montreal, tattooed pig skin with bone tools to test the wear-and-tear patterns that prehistoric tattoo needles should exhibit. He found that when it was used for tattooing, a bone needle would develop a bright polish—but only on the first 3 millimeters of the tip.

Deter-Wolf recently took those experiments one step further. He re-created one of Ötzi's tattoos on his own skin, using a bone tool and black ink to make 1500 individual punctures on his left wrist—and a permanent tattoo. 

attooing human skin using bone tools for an experimental archaeological evaluation
Aaron Deter-Wolf

Deter-Wolf and Peres said that two of the needles in the kit had the same wear-and-tear signatures that Gates found in his experiments. "At this point there's not another activity that we know of that would create that same pattern on bone tools," Deter-Wolf says.

They also found traces of red and black pigment on the tips of the tools. (They're awaiting the final results of an analysis to figure out the chemical makeup of this paint.) They presented their preliminary findings this week at the annual meeting of the Society for American Archaeology in Washington, D.C.

The toolkit is thought to be at least 3600 years old and could be even more ancient: Initial results from a radiocarbon study of shells found at the same site suggest an age of 5200 years. Either way, the tools predate a group of 3000-year-old tattooing tools made from volcanic glass that were identified in 2016 at an archaeological site on an island in the South Pacific.

King of Yamacraw and his nephew, mezzotint by John Faber the Younger
1739 messotint by John Faber the Younger of Tomo Chachi Mico, king of the Yamacraw, and his nephew Tooanahowi
© Yale University Art Gallery

While scholars know a lot about more recent Native American tattooing practices because of historical accounts and ethnographic studies after European contact, prehistoric tattooing remains more mysterious. For now it's impossible to know what kind of tattoos the Fernvale tools would have been used to create, or what meaning tattooing had for the people who lived along this Tennessee river valley during this era, called the Archaic period in North America.

"I think there has to be a whole lot more work done on Archaic lifeways in general before we can even start to parse the deeper meaning of tattooing in this period," Peres says. "We're still arguing about what they were eating and what kind of houses they living in, which are more durable things in the archaeological record."

Deter-Wolf expects archaeologists will identify more tattoo kits hiding in collections: "What I suspect is that once we start looking at more of these things, we're going to find that tattooing is an incredibly widespread activity."

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