This rare bone finally settles the Nanotyrannus mystery

Scientists have confirmed that Nanotyrannus was a mature species, not a young T. rex. A microscopic look at its hyoid bone provided the key evidence, matching growth signals seen in known T. rex specimens. This discovery suggests a richer, more competitive tyrannosaur ecosystem than previously believed. It also highlights how museum fossils and cutting-edge analysis can rewrite prehistoric history.

source https://www.sciencedaily.com/releases/2025/12/251208052523.htm