With all the information out on line, doesn't appear they existed. Apparently, it's modern science's attempt to prove a millions year old earth.

About the fossils, I don't know.  

The ones in the natural history museums are replicas of fossils that are supposed to be in storage.  Additionally, the fossils in storage are not supposed to be complete models.  So, they may not have in storage what they claim to and/or they may be taking way too many liberties with what they do have.  

Apparently, there is no nice neat fossil layer, like we see in the textbooks.  Instead, they are all mixed together, in no particular order.  So, the timeline is purely speculation, based on The Theory of Evolution.  

About the fossils, I don't know.  

The ones in the natural history museums are replicas of fossils that are supposed to be in storage.  Additionally, the fossils in storage are not supposed to be complete models.  So, they may not have in storage what they claim to and/or they may be taking way too many liberties with what they do have.  

Apparently, there is no nice neat fossil layer, like we see in the textbooks.  Instead, they are all mixed together, in no particular order.  So, the timeline is purely speculation, based on The Theory of Evolution.  

Why should the fossil layer be neat and not all mixed together. Do you think they had dinosaur undertakers to line them up in neat graves when they died? As for timelines http://www.nwcreation.net/dinosdragons.html