T. rex was not always the towering giant we recognize today. It evolved from much smaller ancestors within the tyrannosauroid lineage. Early relatives of T. rex, such as Dilong and Guanlong, were small, feathered dinosaurs that lived during the Jurassic period. Over millions of years, these early tyrannosaurs gradually increased in size, adapting to new ecological roles.

During the Late Cretaceous period, T. rex emerged as the apex predator of North America. Its massive growth was driven by changes in its environment, this includes shifts in prey availability and competition with other predators. The combination of rapid growth rates, enhanced hunting capabilities, and powerful bone-crushing jaws helped T. rex become one of the most dominant land predators of all time.

This website explores T. rex's evolutionary journey, from its early relatives to its eventual rise as a giant predator. Each page will dive into different aspects of its biology, including its family tree, growth to gigantism, unique adaptations, and eventual extinction and legacy.