Paleontologists have documented a collection of bone tools from one horizon, 1.5 million years ago, in Tanzania’s All-Bai Valley. These bone tools preceded more than a million years ago other evidence of systematic bone tool production, shedding new light on the almost unknown world of early human bone technology.
The elephant’s humerus, which was 1.5 million years ago, has soaked into the tool. Image credit: CSIC.
Early humans had already made stone tools with some capacity for at least a million years, but there was little evidence of widespread adoption from bones about 500,000 years ago.
Humanity, who shaped the newly discovered bone tools, did it in the same way they created stone tools by shaving small flakes and creating sharp edges.
The transfer of this technology from one medium to another shows that the human race who made bone tools had a high understanding of tool creation, and that they can adapt their technology to different materials, important intellectual leaps.
It could be that human ancestors at the time had higher levels of cognitive skills and brain development than scientists thought.
“The discovery envisages that early humans will greatly expand their technical options, previously limited to stone tools production, and now allow new raw materials to be incorporated into a repertoire of potential artifacts.”
“At the same time, this expansion of technological potential demonstrates the advances in the cognitive and mental structures of these humans, who knew how to incorporate innovation by adapting knowledge of stone work to manipulation of bones.”
“The tool provides evidence that their creators work carefully on the bones, shatter the flakes and create useful shapes,” says Dr. Renata Peters, a researcher at the University of London.
“We were excited to find these bone tools from these early time frames.”
“It means that human ancestors were able to transfer skills from stones to bones, a level of complex cognition that we have not seen elsewhere in a million years.”
https://www.youtube.com/watch?v=ipecfzkuytc
The 1.5 million-year-old bone tool was discovered at the T69 complex site in Friedalie Ki Collongo West Gully in the All-By Valley in northern Tanzania.
The research authors discovered a collection of 27 bones shaped into the site’s tools. The bones mostly came from large mammals, mostly elephants and hippopotamus.
The tool is made only from the bones of the animal’s limbs. These are because they are the most dense and strong.
Very early stone tools have come from the All Old One era, which grew from about 2.7 million to 1.5 million years ago. It employs a simple method of making stone tools by shaving one or several flakes from the stone core using hammer stones.
The bone tool reported in the current study was a time when ancient human ancestors began in the Akeirian era, when they began around 1.7 million years ago.
Acheulean technology is best characterized by using more complex hand axes carefully shaped by napping.
Bone tools show that these more advanced techniques have been carried over and adopted for use in bone.
Prior to this discovery, bones shaped into tools were only sporadically identified in rare and isolated cases of the fossil record, not a way to imply that human ancestors systematically produced them.
Due to the overall shape, size and sharp edges, exactly what the tool was used is unknown, but it may have been used to deal with animal corpses in food.
It is also unknown that human ancestor species created the tool.
Alongside the collection of bone artifacts, no relics of humanity were found, but they are known at the time, Homo Erectus and Paranthropus Boisei He was a resident of this area.
“These tools were such an unexpected discovery, so we hope that our findings will encourage archaeologists to reconsider bone discoveries around the world in case other evidence of bone tools is missed,” the researchers said.
Their paper Today I’ll be appearing in the journal Nature.
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I. de la Torr et al. Systematic bone tool production 1.5 million years ago. NaturePublished online on March 5th, 2025. doi:10.1038/s41586-025-08652-5
Source: www.sci.news
