Tyrannosaurus rex, often called T. rex, was a massive carnivorous dinosaur that lived around 68 to 66 million years ago during the late Cretaceous period. Standing up to 40 feet long and towering at 12 feet tall at the hips, it had powerful jaws lined with sharp teeth for crushing prey. T. rex was a top predator in its ecosystem, with its iconic small arms and massive, muscular legs designed for hunting and scavenging.nSpecifications:nn1:1 scalenPolyurethane resin castnTooth Length (straight across) 11.7 cm (4.6 in.)nTooth Length (measured along the outer curve) 12.7 cm (5 in.)nTooth Width 2.7 cm (1.1 in.)nTooth Height 4.8 cm (1.9 in.)nnOrigin: North America