The Menahuni and the Trogs could be submitted under the Lifeform/intelligent catagory, and even the humans of your setting can be submitted since paleologically speaking the age of man and the age of the dinosaurs was seperated by something like 64 million years. Who are they, where did they come from, details such as their society, faith and so forth, since common science places humanities origin somewhere in eastern Africa, and not in North America.
You've got a real solid start on the setting, but I hope to see more details about it, specifically more on the society level, since I have a fairly solid grasp of the animal and plantlife of the late Cretacous period of North America. BTW, the angiosperms had already established themselves by this point, with the big turning point having been some time back in the late jurassic and early cretacous period. As for what category to submit it in, I would suggest the Location/world. If you want a second opinion, I would suggest Moonhunter