Concepts are important, and I believe you are on the right wavelength in answering the way you did.

The point of course, is that the dinosaurs still exist at different coordinates, not just that if we had a strong enough telescope we could see them. If there was a way, from a distance, of instantaneously leaping across time, we could reenter the ancient world- in all its reality! Photons have this capability, and the universe including dinosaurs is made of photons. Dinosaurs are eternal gargoyles on the walls of the universe, just as we are.

Quantum Mechanics is an observational measurement of an embedded, higher dimensional phenomenon in 4-D. Since we observe the universe in 4-D...Quantum Mechanics and Heisenberg's uncertainty principle too, work, but there is much more involved in cosmology than the Heinsenberg uncertainty principle- or 4-D.

Best Wishes, Sam Cox