Great picture. The only thing disturbing the scene is the dead tree at the right in my opinion. I think it's useless and taking over the stegosaurs. My eye want to escape in the background in the circulation of your composition but this tree is blocking the fluidity.
I agree, dead trees are a tricky device in paleo-art. Sometimes they work, other times they just look wrong. I've had a few of mine look out of place before too. I suspect this usually has to do with a mismatch of boldness relative to distance.