What is a type of relative dating of fossils

Our understanding of the shape and pattern of the history of life depends on the accuracy of fossils and dating methods.Some critics, particularly religious fundamentalists, argue that neither fossils nor dating can be trusted, and that their interpretations are better.

Uranium is present in many different rocks and minerals, usually in the form of uranium-238.The diagram right shows two distinct faunal assemblages.What can be deduced from our two distinct faunas in terms of their usefulness in the relative dating of rocks?The table below summarises key features: Gastrioceras listeri is a particularly good example of a ZONE fossil.As it is free swimming it could have travelled a considerable distance.