Nanotyrannus is still not a teenage T. rex

Fossil throat bones tip the scales in the long-running debate

An illustration of a Nanotyrannus and two T. rexes competing for the carcass of another dinosaur.

A full-grown Nanotyrannus lancensis (illustrated, left) competes for food with a juvenile, feathered Tyrannosaurus rex (right), while an adult T. rex watches in the background.

Andrey Atuchin

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