A 2025 paper by Lindsay Zanno and James Napoli concluded that some bones from the 'Dueling Dinosaurs' specimen represent a fully grown individual of Nanotyrannus lancensis rather than a juvenile Tyrannosaurus rex.
October 30, 2025
high
temporal
Taxonomic reinterpretation of bones from the well-known 'Dueling Dinosaurs' fossil assemblage.
The taxon name Nanotyrannus lancensis was assigned to a medium-sized theropod dinosaur in 1988.
January 01, 1988
high
taxonomy
Historical taxonomic designation for a medium-sized tyrannosaur specimen.