What does the discovery of a fossil of an ancient fish atop a mountain indicate about Earth's past?

Answer 1

It indicates that the sediments that contained the fossil were deposited in a low area such as a lake, sea or ocean and that the rock formed from that sediment was later uplifted by plate tectonics as part of a mountain range.

Answer 2

The discovery of a fossil of an ancient fish atop a mountain suggests that the area was once underwater, possibly indicating plate tectonics and the movement of Earth's crust. It provides evidence of past geological changes and can help scientists reconstruct the history of the Earth's surface.

Answer 3

the desert actually had been an ocean or lake before it dried up