Troodon is a dubious genus of small coelurosaurian dinosaurs known only from teeth. Teeth of Troodon formosus have been found in Montana's Judith River Formation, and troodontid teeth from the Prince Creek Formation in Alaska have been referred to the genus as well. Wear patterns on the Alaskan tooth specimens imply their diets primarily consisted of soft foods, such as tender meat.
In The Land Before Time
The role is still under debate.