That infers that the dinosaurs could have had some kind of civilization, and there’s no evidence left, because they didn’t play jacks.
If the eroded bones or even imprint of a soft body of some creature that waded in a swamp can be solidified into rock with sufficient fidelity to be preserved for many millions of years, the fossilised imprints and unusual mineral concentrations of the dinosaur equivalent of New York City would be hard to miss or dismiss, assuming it was somewhere we were looking.
A lot changes, in millions of years. A lot of what we think of as "the surface" was once underground. Entire mountain ranges rise up, sublimate, and weather, in millions of years. Continents drift around, etc. The Appalachian Range was once taller than the Himalayas. Mile-high glaciers once shaped the land (not that long ago, too). I live on glacier poop.
It's pretty hard to actually grok epoch time. My mother was a geologist, so I was raised with it, but it still boggles me, when I think of it.
It's entirely possible that we have seen "fossils" of artifacts, but don't recognize them, as such, because they have turned into rocks. We ignored fossils for most of human history.
Chips will make some very interesting fossils. They are basically an infinitely intricate pattern of class mixed with some stuff that will go away with time.
Manmade objects will probably disintegrate with time, but we have drained fossil fuel deposits, leveled down mountains, diverted rivers, drained lakes, etc.
Some of those geographical features will surely remain unnatural-looking (?)
Stealing it…
If the dinosaurs had Teflon pans and nuclear power plants, we wouldn't necessarily know. The Himalayas didn't even exist yet when the dinosaurs were around.
https://en.wikipedia.org/wiki/Natural_nuclear_fission_reacto...
So it seems likely that our nuclear waste deposits will have isotopic concentrations that indicate fission took place. But this time, the U235 concentration is too low for it to have happened naturally.