Question

geologist finds fossils of a lizard-like dinosaur and a fern-like tree in layers that are 1.0 m and 1.5 m deep. However, in a layer that is 2.0 m deep, he finds fossils of bony fish and shellfish.

Which explains?

1.
The continent shifted to a polar region.

2.
The ancient land area was invaded by a sea. **

3.
The ancient sea dried up and became land.

4.
An asteroid hit the area, causing the dinosaur to become extinct.

Answer 1

I disagree. The evidence of a sea is older than the trees and dinosaurs.

Answer 2

So it would be the ancient sea dried up and became land. I was just backwards, lol @Ms. Sue

Answer 3

You're right.