No, but continual polishing by rubbing against leather leaves
microscopically detectable surface charactertics on tools, and these
are seen in the archaeological record, which suggests that these tools
were carried in leather bags.
> Is fire a Neanderthal/Cro-Magnon/sapiens development?
Use of fire seems to predate both Neandertal and Cro-Magnon
by either a lot (100s of Ky) or a whole lot (1 My), depending
on what evidence you believe, and what you consider "use".
(I will have to double-check my references, but they are at
home now...)
-- Jay Freeman, First Extropian Squirrel