NAME: Meaning - Troodon means "wounding tooth"
Pronounced - TROH-o-don
Named By - Joseph Leidy
When Named - 1856
DIET: Carnivore (meat-eater)
SIZE: Length - 6.5-11.5 ft (2-3.5 m) long
Height - 3 ft (1 m) tall at the hips
Weight - 110 pounds (50 kg)
WHEN IT LIVED: Late Cretaceous period, about 76-70 million years ago
WHERE IT LIVED: Fossils have been found in Canada (Alberta) and USA (Montana and Wyoming), North America.
FOSSILS: The first Troödon fossil was discovered by Ferdinand V. Hayden in 1855. Many teeth, 20 skeletons, and elongated eggs (some located in dirt nests) with embryos have been found.
CLASSIFICATION: Kingdom Animalia (animals)
Phylum Chordata (having a hollow nerve chord ending in a brain)
Class Archosauria (diapsids with socket-set teeth, etc.)
Order Saurischia - lizard-hipped dinosaurs
Suborder Theropoda - bipedal carnivores
Tetanura - advanced theropods with three fingers
Infraorder Coelurosauria - lightly-built fast-running predators with hollow bones and large brains
Family Troodontidae - the smartest dinosaurs with large eyes and grasping hands (eg. Troödon, Borogovia, Hepasteornis, Paronychodon, Saurornithoides, Sinornithoides, and Tochisaurus). They may have been omnivores.
Genus Troodon
Species T. formosus (type species named by Leidy, 1856)

INTERESTING
FACTS: Troodon may have been the smartest dinosaur, having the largest brain in proportion to its body weight (as smart as a modern bird). It was a fast-moving, light-weight predator that walked on two long legs. It had serrated teeth, long, slim jaws, and a stiff tail.