Yes, that particular fossilized ink sac, when ground up and rehydrated with ammonia, turned into an ink capable of drawing on paper.
OYG....that means Man walked the Earth with vegetarian T rex!!!
Yes, a squid’s ink sac fossilized, the key term being FOSSILIZED. Of course, soft tissue fossils are more rare than simple bone/shell fossils, but not unheard of outside of your small world.....and didja know that they also found some fossililzed eyes too?
What I find amazing is that someone would be surprised that a ground up and rehydrated fossilized ink sac would make an ink-like substance.
SHOCKER!!!
This was discussed the first time this article appeared.
Apparently, the ink sac was not fossilized, it was just dessicated.
In fossilization, the bony material of the creature is replaced by minerals from the surrounding soil. Other elements, (like an ink sac) become dessicated. They can be rehydrated.