That's wild! Thanks for sharing. I didn't realize these things went so far back. So are you saying these were straight up non-human primates using tools? Or is this all traceable to our lineage?
Then around 2-2.5 million years ago you get the first homo species in the genus homo such as Homo habilis and they created the Oldowan tool culture.
Both Australopithecus afarensis and Homo habilis are our ancestors -- however they are also the ancestors of other homo lines that diverged from us that we are not descendents of (which are now extinct).
People often forget how widespread and varied the Homo genus was before all our cousin species went extinct (likely in part due to us).[1] Homo erectus colonized the entire old world very effectively 1.5 million years ago!
[1] https://en.wikipedia.org/wiki/Homo#/media/File:The_hominin_f...
Also, more than primates use tools: Many corvids (crows, ravens, etc.) do, as do other animals. Look up New Caledonian Crows in particular.
But don't take all this from HN commenters debating each other; find some authoritative sources. A recent review article in a scientific journal would be a great start. Google Scholar lets you search for review articles.
>Flexible use of a multi-purpose tool by a cow
https://www.cell.com/current-biology/fulltext/S0960-9822(25)...
https://en.wikipedia.org/wiki/Cow_tools#/media/File:Cow_Tool...
Chimps and New Caledonian Crows (and maybe some other animals) also manufacture their tools, at least sometimes, BTW. IIRC the crows strip sticks and bend them into hooks to grab at objects.
Why would someone imply otherwise if they don't know? What are people trying to prove in this discussion?
[0] There's strong evidence of 3.3 mya; see other comments.
Agreed, though the dividing line is tricky.
(Your prior comment didn't say 95% of that; for example, it doesn't mention animals. Because the parent comments were focused on human ancestors, that's what I thought you were addressing.)
I assume these are made of stone? What kind of tools?
In terms of tools by homonins, there is a roughly ~3million year history of stone tool use by various species, and the main thing preventing that date from being pushed further back is the difficulty in discerning between stones that have been shaped intentionally and those shaped by natural forces.
We have both observational and archaeological evidence of tool use in chimpanzees, macaques, and capuchins so it’s a pretty widespread behavior. I think the archaeological evidence for monkeys only goes back about four thousand years but thats because we havent studied the issue as much in archaeology.