Home / Science / To Craft Cutting Tools, Neanderthals Dove for Clam Shells on the Ocean Floor | Science

To Craft Cutting Tools, Neanderthals Dove for Clam Shells on the Ocean Floor | Science

To Craft Cutting Tools, Neanderthals Dove for Clam Shells on the Ocean Floor |
Science

Archaeological proof has upended our picture of Neanderthals in the final couple of many years. We’ve discovered that these extinct human relations might have embellished their our bodies, buried their useless and even created artwork. These behaviors make them appear way more like our personal species, Homo sapiens, than beforehand believed. And in accordance with a brand new research in the journal PLOS ONE, we are able to add one other ability to the Neanderthals’ resume: diving for clams.

About 90,000 years in the past, Neanderthals residing on the Italian Peninsula between what’s now Rome and Naples waded offshore into the Mediterranean Sea. Seeking clam shells, they reached their arms underwater, and maybe even held their breath to swim all the way down to the sandy seafloor. Back on the seaside, they broke open the mollusks and possibly loved consuming a few of the uncooked meat inside, however they have been primarily enthusiastic about the shells themselves.

With skinny, sharp edges, these shells have been primarily pure knives. Instead of spending the higher a part of a day carving blades from hunks of rock, Neanderthals might discover the instruments by venturing to the seaside. They might need gathered some useless and dried out clams that had washed up on the shore, however the residing clams nonetheless underwater, although more durable to get, have been probably prized for their thicker shells.

These Neanderthals retouched their shell instruments, chipping away the edges with stone hammers to additional sharpen the edges, and so they took a superb variety of these knives again to a shelter at the base of a limestone cliff. When archaeologists examined a collapse the cliff generally known as Grotta dei Moscerini in 1949, they discovered 171 examples of retouched instruments normal from clam shells. At that point, nevertheless, it wasn’t clear whether or not the shells had been plucked off a seaside or sourced stay from the water.

A crew of researchers led by Paola Villa, an archaeologist at the University of Colorado Boulder, lately revisited the assortment of shell instruments from Grotta dei Moscerini and located revealing new particulars. Most of the shell instruments had abraded surfaces, which one would count on of dry shells picked off a seaside. But almost 1 / 4 of the clam shells had shiny, easy exteriors, typical of shells picked stay from the seafloor. In their new research, Villa and her colleagues conclude that diving for clams might have been a routine a part of Neanderthal life on this area.

“There’s this debate that’s been going on for the better part of a century about the extent to which Neanderthals had the same behavioral repertoire as modern humans,” says Erik Trinkaus, an archaeologist at Washington University in St. Louis who wasn’t concerned in the new research. Fishing and utilizing coastal sources have been regarded as distinctive behaviors to fashionable people, he says, however over the final decade or so, “a number of examples have come out of excavations around Europe that have shown that Neanderthals were perfectly capable of exploiting marine resources.”

At different Neanderthal websites in Europe, archaeologists have discovered extra shell instruments in addition to the stays of freshwater fish and mussels. In a research revealed final yr, Trinkaus and his colleagues confirmed that a bony development in the ear canal attributable to repeated publicity to chilly water, typically referred to as swimmer’s ear or surfer’s ear, was frequent amongst Neanderthals, a sign that our extinct cousins habitually went to the coasts and rivers looking for meals and different uncooked supplies.

Villa and her colleagues do not know what Neanderthals have been slicing with their shell instruments at Grotta dei Moscerini, however the researchers additionally discovered a group of pumice stones from the cave, which can have been abrading or sprucing instruments, just like fashionable sandpaper. These stones have been probably created throughout volcanic eruptions to the south in locations like Mount Vesuvius and scooped up by Neanderthals as they washed up on the close by seaside.

The place the place the artifacts have been present in Grotta dei Moscerini is now not accessible as a result of it was buried underneath rocky particles that was blasted from the facet of the hill throughout the development of a coastal freeway in the early 1970s, in accordance with Villa. “Re-excavating the site will not be easy at all,” she says, and proper now the crew has no plans to strive.

Trinkaus says the new research “reinforces what is becoming increasingly evident from a variety of different sources of archaeological data: Neanderthals were able to do, and occasionally did, most of these kind of behaviors that had been considered to be special to modern humans.” The bias towards Neanderthal skills might merely be resulting from an absence of widespread archaeological proof.

Unfortunately, the coastal websites that may assist bolster the case for Neanderthal seaside actions are uncommon, and plenty of are actually underwater. During the time that Neanderthals and people shared the planet, the local weather was a lot colder and ice sheets stretched over bigger elements of the European continent. But at the finish of the final ice age, between about 19,000 to about 6,000 years in the past, sea ranges rose round the world by about 400 ft, swallowing the once-shoreside campsites of prehistory.

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