In areas further south in the United States, a dryer climate means that soil erosion is a lot slower. In areas to the north, on the other hand, a wet climate means more forests. And more forests mean more roots and organisms in the soil, which can lead to fossils being wrecked. Those aren’t problems that occur in southern Utah, though.
While there is rainfall in southern Utah, it’s nowhere near as strong as it is further north. That means erosion happens – which in turn helps to bring fossils to the surface – and yet the ground isn’t wet enough for forests to take hold. Thanks to this near-perfect climate, then, dinosaur remains are frequently discovered in the Grand Staircase area. And that has seen paleontologists flock to the region.