Archaeologists from the University of Colorado has conducted a survey of a large elephant grave site in Italy, in which ancient hominids appropriated the carcases to manufacture advanced bone tools that wouldn’t become common for another 100,000 years.
The team discovered that humans were active at the site called Castel di Guido, not far from modern-day Rome roughly 400,000 years ago. The site would have been the location of a gully that had been carved by an ephemeral stream, most likely attracting straight-tusked elephants (Palaeoloxodon antiquus).
“At Castel di Guido, humans were breaking the long bones of the elephants in a standardized manner and producing standardized blanks to make bone tools,” said archaeologist Paola Villa. “This kind of aptitude didn’t become common until much later.”
The researchers report that these Stone Age residents produced tools using a systematic, standardized approach, a bit like a single individual working on a primitive assembly line.
Stone Age toolbox
These feats of ingenuity came at a significant time for hominids in general.
Right around 400,000 years ago, Neanderthals (Homo neanderthalensis) were just beginning to emerge in Europe. Villa suspects that Castel di Guido’s residents were
“About 400,000 years ago, you start to see the habitual use of fire, and it’s the beginning of the Neanderthal lineage,” Villa said. “This is a very important period for Castel di Guido.”
It may have been a productive one, too. In their new study, Villa and her colleagues identified 98 bone tools from Castel di Guido, which was excavated from 1979 to 1991.
The findings represent the highest number of flaked bone tools made by pre-modern hominids that researchers have described so far. That rich toolbox offered a wide range of useful items: Some tools were pointed and could, theoretically, have been used to cut meat. Others were wedges that may have been helpful for splitting heavy elephant femurs and other long bones.
“First you make a groove where you can insert these heavy pieces that have a cutting edge,” Villa said. “Then you hammer it, and at some point, the bone will break.”
But one tool stood out from the rest: The team discovered a single artifact carved from a wild cattle bone that was long and smooth at one end.
It resembles what archaeologists call a “lissoir,” or a smoother, a type of tool that hominids used to treat leather. The curious thing: Lissoir tools didn’t become common until about 300,000 years ago.
“At other sites 400,000 years ago, people were just using whatever bone fragments they had available,” Villa said.
Something special, in other words, seemed to be happening at the Italian site.
Villa doesn’t think that the Castel di Guido hominids were any more intelligent than their counterparts elsewhere in Europe. Instead, these early humans simply used the resources they had lying around. She explained that this region of Italy doesn’t have a lot of naturally-occurring, large pieces of flint, so ancient humans couldn’t make many large stone tools.
What the region might have had a lot of, however, were dead elephants. As the Stone Age progressed, straight-tusked elephants slowly disappeared from Europe. During the era of Castel di Guido’s bone-crafters, these animals may have flocked to watering holes at the site, occasionally dying from natural causes. Humans then found the remains and butchered them for their long bones.
“The Castel di Guido people had cognitive intellects that allowed them to produce complex bone technology,” Villa said. “At other assemblages, there were enough bones for people to make a few pieces, but not enough to begin a standardized and systematic production of bone tools.”
Header Image Credit : Villa et al. 2021, PLOS ONE