Fossils relative absolute dating

08-Dec-2014 18:31

The Age of Dinosaurs was so many millions of years ago that it is very difficult to date exactly.

The best examples are fossils of animals or plants that lived for a very short period of time and were found in a lot of places.

The sediment of this area was laid down after ammonite A appeared 199 million years ago, and before ammonite B became extinct 195 million years ago.