Out crop containg Jurrassic Dino.?

Question

Does an outcrop contaning Jurrasic dinosaur fossils overlying Pennsylvanian coal deposits represent uninterrupted deposition? Explain.

Answer 1

No, it represents a depositional hiatus or erosional unconformity. You can tell this because with uninterrupted deposition, the layers of strata would move sequentially from one geologic age to the next, via the law of superposition.
However, there are tens of millions of years separating the Pennsylvanian from the Jurassic-you'd be missing the Permian and Triassic which should go in between the two. So, something had to have happenned to those layers.