There is a long line of fossils showing gradual change of an evolutionary kind.
It is a fact.
No, there is a long line of fossils that is perported to show adaptation of a species to it's environment. The problem is that we only have the bones, and not the DNA to prove if the "changes" are evolutionary, or adaptive. How are we to know that the "long line of evolution" isn't in fact merely evidence of many different species of the same genus just as the 50 lb. Bulldog is a different species of the same genus 'Molosser' as the 200 lb. English Mastiff.
Further, let's take Darwins finches for instance. He claimed that they had "evolved" by growing stronger and larger beaks to adapt to the changing food supply, but what isn't addressed is the fact that decades later, the beaks of subsequent generations returned to their ancestors original size once their original food source returned in abundence. The change was no different than someones bones strengthening due to extreme manual labor (beaks are after all bony materiel), and then years later losing that bone mass when one is no longer doing extreme manual labor. The body changes and adapts to meet the challenges of it's environment and needs (within reason), but that is not proof of "evolution".
No, the bones in and of themselves show nothing, and even when taken in the context of where they are in the geologic strata, all we know is that a creature of this type existed in a particular place at a particular time.
If one is going to be intellectually honest, then you have to always remember to ask yourself these questions, "what do you
think, what do you
know, and what can you
prove. Thinking something doesn't mean anything, knowing something is good, but not nearly as good as being able to PROVE it, and evolution has not been proven, or it would be the Law of Evolution.