Dinosaur Ornitholestes Running Through Forest
The dinosaurs Ornitholestes running through a forest in this late Jurassic scene. Though an artistic interpretation, this illustration depicts the dinosaur in what is now believed to be the actual appearances of all theropod dinosaurs, with a coat of flock (rudimentary feathers/fur) more analogous to modern birds than reptiles.
Ornitholestes (meaning "bird robber") is a small theropod dinosaur of the late Jurassic (Brushy Basin Member of the Morrison Formation, middle Kimmeridgian age, about 154 million years ago) of Western Laurasia (the area that was to become North America).
(Definition Source: Wikipedia)