Nanotyrannus and Tyrannosaurus coexisted at the close of the Cretaceous

2025/10/30 by Lindsay E. Zanno, James G. Napoli · 13 citations
Earth and Planetary Sciences · #Paleontology and Evolutionary Biology #Paleontology and Stratigraphy of Fossils #Evolution and Paleontology Studies

paper · doi:10.1038/s41586-025-09801-6

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• Comparative cranial biomechanics reveal macroevolutionary trends in theropod dinosaurs, with emphasis on Tyrannosauroidea
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• The taxonomics of the diverse, lithe basal eutyrannosaur genera and species of late Maastrichtian western North America
• Behavioral implications of an embedded tyrannosaurid tooth and associated tooth marks on an articulated skull of Edmontosaurus from the Hell Creek Formation, Montana
• Inferred presence of extraoral tissues in Triassic archosauromorphs and the evolutionary implications for the clade Sauropsida
• Prolonged growth and extended subadult development in the Tyrannosaurus rex species complex revealed by expanded histological sampling and statistical modeling. [europepmc]
• Behavioral implications of an embedded tyrannosaurid tooth and associated tooth marks on an articulated skull of Edmontosaurus from the Hell Creek Formation, Montana. [europepmc]
• A large tyrannosaurid from the Late Cretaceous (Campanian) of North America. [europepmc]
• Obligate faunivorous megatheropod size class patterns across the Jurassic-Cretaceous Periods. [europepmc]
• High precision CA-ID-TIMS U-Pb zircon age for the "Dueling Dinosaurs" locality, with implications for regional correlation, basal age and duration of the Hell Creek Formation, Montana. [europepmc]