Tyrannosaurus rex, 13-inch tooth Troodon 4 million years ago

4 million years ago

the lowest levels in the water column could not support much life and was devoid of oxygen

While the Anzick cache is associated with a child burial

and Wannaganosuchus brachymanus from Allognathosuchus

Ceratosaurus maxilla

Tyrannosaurus rex, 13-inch tooth Troodon 4 million years agoTyrannosaurs rex Record tooth This incredible tooth was found in the Hell Creek Formation of South Dakota. It measures an unbelievable 13 inches long from the tip around the curve to the end of the root. This makes this tooth one of the largest ever found. T rex had a variety of sizes of teeth, from only 1 inch above the gum line to 15 inches including the root. T rex was up to 18. 5 feet tall, 50 feet long, & weighed up to 6 tons. Most specimens have