Cracking the myth of the teen rex

A life reconstruction of a pack of ‘Nanotyrannus’ attacking a juvenile T. rex. — Anthony Hutchings/ The New York Times

FOR 40 years, dinosaur experts have been locked in a huge debate over diminutive fossils found in the western United States. Did they belong to a teenage version of Tyrannosaurus rex or another species in the tyrannosaur family entirely?

A new study may have settled the dispute.

Tags / Keywords: Colleges And Universities; East Coast (Us); Paleontology; Wisconsin; Carthage (Book); Spine (Body Part); North Carolina; States (Us); Holtz , Thomas R Jr; Nature (Journal); University Of Edinburgh; Zanno , Lindsay; University Of London; Queen Mary University Of London; North America; United States; Brusatte , Stephen L; Montana; North Carolina Museum Of Natural Sciences; Animal Behavior; Research; Skull (Body Part); Dinosaurs; Fossils; Animals; University Of Maryland; Maryland; Lindsay (Tv Program)

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Focus 03 Dec 2025