A complete tyrannosaur skeleton has just ended one of palaeontology’s longest-running debates: whether Nanotyrannus is a distinct species, or just a teenage version of Tyrannosaurus rex.
For years, palaeontologists used Nanotyrannus fossils to model T. rex growth and behaviour, but he fossil, part of the legendary “Dueling Dinosaurs” specimen unearthed in Montana has skeletal features fixed early in development and biologically incompatible with T.rex.
That tyrannosaur is now confirmed to be a fully grown Nanotyrannus lancensis, not a teenage T. rex, as many scientists once believed, flipping decades of T.rex research on it’s head
Learn more ➤ https://www.newscientist.com/article/2502146-dinosaur-skeleton-settles-long-debate-over-tiny-t-rex-fossils/
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