1.1" Tyrannosaurus Rex Fossil Bone Dinosaur Lance Creek Formation Wyoming COA

Location: Lance Creek Formation, Weston County, Wyoming (Private Land Origin)

Weight: 0.3 Ounces

Dimensions: 1.1 Inches Long, 0.7 Inches Wide, 0.2 Inches Thick

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Late Cretaceous, 67 Million Years Old 

Name: Tyrannosaurus Rex

Type: Carnivore

Size: 12 to 13 meters long.

Tyrannosaurus Rex, widely known as T. Rex or T-Rex, is one of the most iconic and formidable dinosaurs ever discovered. Living approximately 65 million years ago during the Late Cretaceous Period, T. Rex reigned as the apex predator of North American ecosystems. Often called “The King of Tyrant Lizards,” it is renowned for its massive size, bone-crushing bite, and powerful predatory adaptations, making it a symbol of prehistoric power and dominance.

This enormous theropod could grow up to 12–13 meters (40–43 feet) in length, stand around 4 meters tall at the hips, and weigh between 8–10 tonnes. Its skull alone could reach lengths of over 1.5 meters, packed with more than 50 large, serrated teeth designed to pierce, grip, and slice through the flesh and bones of its prey. T. Rex possessed the most powerful bite of any terrestrial animal, capable of exerting an estimated 35,000 pounds of pressure, allowing it to feed on herbivorous dinosaurs such as Triceratops, Edmontosaurus, and Ankylosaurus.

The T. Rex body was perfectly adapted for predation. Its long, muscular hind limbs provided tremendous speed and agility relative to its massive size, while its long, heavy tail acted as a counterbalance, enhancing stability during movement and attacks. Although its forelimbs were proportionally short, they were heavily muscled and ended in two sharp claws, likely used to grasp prey or assist in feeding. Fossil evidence also suggests a robust sensory system: keen binocular vision, acute hearing, and a highly developed olfactory sense allowed T. Rex to detect prey from long distances and track injured or vulnerable animals.