Troodon is a former wastebasket taxon and a potentially dubious genus of relatively small, bird-like theropod dinosaurs definitively known from the Campanian age of the Late Cretaceous period. It includes at least one species, Troodon formosus,... Wikipedia
Lived: 86.3 million years ago - 66 million years ago (Santonian - Maastrichtian)
Fossils: DMNH 22158, NMC 8540, ANSP 9259, and more
Mass: 110 lbs
Length: 7.9 ft.
Height: 3 ft.
Family: †Troodontidae
Domain: Eukaryota