Every Giant Tyrannosaurus rex Specimen Explained | Megatheropod Paleontology

Tyrannosaurus rex is THE theropod, the gateway dinosaur into paleontology. With so many specimens discovered in the 120 years since its description, it’s extremely well-studied and has provided the bulk of our understanding of megatheropod paleontology. Part of the fun of working with megatheropods is figuring out which primeval apex predator was top dog in terms of body size, and that’s no different within Tyrannosaurus rex itself. Today we’re covering all of the giant Tyrannosaurus rex specimens discovered as of May 2026, using cutting-edge research to determine which tyrant lizard was truly the king. 00:00: Every Giant Tyrannosaurus rex Specimen Explained 02:44: Reference Specimens 04:57: Tyrannosaurus rex Specimens from Smallest to largest