Sentence 1: Scientists believe that amber was deposited in a flat part of a sea basin in a delta of a prehistoric river during the Upper Eocene and the Lower Oligocene .
Sentence 2: Scientists believe that amber was deposited during the Upper Eocene and Lower Oligocene in a delta of a prehistoric river , in a shallow part of a marine basin .
Question: Do Sentence 1 and Sentence 2 express the same meaning? Yes or No?