Why fossils of organisms (let’s say dinosaurs) found in rocks take the vertical space of rocks that supposedly formed over not decades, but hundreds, thousands years?

Question

Were they simply just lying on the ground for so long, undisturbed by scavenger animals, wind and water?

In: 4

Answer 1

You mean the rocks containing the fossils, that are so much older than all the other rocks lying on top, can’t have reached the surface? Well, they do, because of constant mountain building, uplift and erosion that not only brings them closer to the surface, but wears away the younger rocks. It’s hard to imagine but erosional forces can removed thousands of meters of rock over a few million years.