That's a good question that cannot be aswered with just a "yes" or a "no"
I don't think that any species of dinosaurs had a human-like interligence.Even if it were so there won't be fossils of what they created(a suit of metal armor would have been useful 65Million years ago
)I'm not sure what materials would survive such a long time.I've read a book,where an experiment failed, so there was a small strip of jungle(plus dinos
) beamed from the past to the present.This was going further and further until Las Vegas was completely beamed into past(and some people who can't be evacuated in time).Anyway a archeologist finds a message from the past conserved in Amber^^
Later he was beamed into past voluntary because someone whose family died from a dino attack beamed a bottle full of gas,which makes every species of dinosaurs infertile...
Anyway he solved his mission and BTW he stopped the beaming by destroying the machine used for the experiment and he died(the funny thing was that he writes the message himself
)
So I'd say Amber would survive long periods of time
But as you say...very hypothetical