It really can't be overstated; prior to this the amount of writing was basically zilch, and it was almost all grave markers. There wasn't really an expectation that would ever change, so this is a hugely pleasant surprise.
The largest Etruscan body of text we have is 1200 words, it somehow ended up as wrappings for a mummy in Egypt.
Very cool, I'd never heard of this:
"How Much is Said in a Tweet? A Multilingual, Information-theoretic Perspective"
I think what you want is presented in a figure on page 6.
For example, some cave paintings cave estimated to at least 37,300 years old and some prehistoric figurines may be as old as 800,000 years.
Here's an example (praying to the art history gods this is an actual Etruscan example and not something else): http://www.royalathena.com/media/Etruscan/Bronze/HFN01.jpg
You can see in their work both the modern world that their culture would help form and the pre-historic tribal past of Europe.
[0] https://en.wikipedia.org/wiki/Etruscan_jewelry [1] https://en.wikipedia.org/wiki/Etruscan_jewelry#/media/File:E...