In diagrams, It is common to depict geological periods to be directly on top of each other with fossils of that period within them. When looking for evidence of this, I have only found examples of trilobites and shells. However it is common to see this sort of ordering depicted with dinosaurs in them http://www.globalchange.umich.edu/globalchange1/current/lectures/complex_life/fossil_record.html
In high school my teacher said that at the grand canyon we find no fossils at the bottom, further up we find shells, above that we find jellyfish, then fish, then reptiles, then mammals. After doing research I found out that this was not the case. Now I suspect that diagrams that depict this ordering of the fossil record with dinosaurs maybe deception or at least a representation of the fossil record that can be easily misinterpreted by laymen.
So are there any examples of this sort of ordering?
Note: I know the wording of the question is quite terrible. Feel free to edit it.