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Nanotyrannus

N. lethaeus Tyrannosaurus rex Anatomy Classification Paleoecology Fossil Discovery

Adult Nanotyrannus Identified in 'Dueling Dinosaurs' Fossil, Forcing Rethink of T. Rex Growth

Histology with distinctive anatomy points to a small-bodied tyrannosaur that reached maturity at near full size.

Nature Study Confirms Adult Nanotyrannus in 'Dueling Dinosaurs,' Upending T. rex Growth Models