[notahacker]

If dinosaurs had changed their environment as much as humans, there would probably be more than the occasional fortuitously preserved corpse or footprint to find.

[JetSpiegel]

What about all the oil and gas?

[Rebelgecko]

Maybe dinosaurs were just more advanced when it came to building a society that coexisted with their environment

[hangsi]

Yeah, there should be some sort of world wide epoch shifting environmental change about 65 million years ago to show for it.

[notahacker]

I'd be more impressed with a fossilized dinosaur port, motorway or garbage dump than a crater in the Gulf of Mexico tbf...