Carbon dating of dinosaur fossils

At right is a layered stromatolite, produced by the activity of ancient cyanobacteria.

Although most attention in today's world focuses on dinosaurs and why they became extinct, the world of paleontology includes many other interesting organisms which tell us about Earth's past history.Most of us would agree that we’re just glad they’re part of the family! How can we explain the tremendous variety of dog breeds?The standard approach to looking at fossils in the geological column is to assume that lower is older.This evolutionary progression seems to be clearly demonstrated in that certain kinds of creatures in the upper layers are rarely if ever seen in lower layers.Many of the layers also show a certain specialization.