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Research Methods

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Mummified Permian Reptile Reveals Oldest Rib-Powered Breathing System

Noninvasive scans uncovered soft tissues that push the fossil protein record back nearly 100 million years.

500-Million-Year-Old Chelicerate Pushes Back Spider Lineage by 20 Million Years

Study Finds Tyrannosaur Tooth Embedded in Edmontosaurus Skull

Rebuilt Jurassic Food Web Shows Baby Sauropods Fed the Top Predators

New Study Finds T. Rex Reached Full Size Around Age 40

Newly Described Cretaceous Bird Likely Choked on 800 Stones, Study Finds

Hyoid-Bone Study Confirms Nanotyrannus Was Its Own Tyrannosaur Species

Adult Nanotyrannus Identified in 'Dueling Dinosaurs' Fossil, Forcing Rethink of T. Rex Growth

Nature Study Confirms Adult Nanotyrannus in 'Dueling Dinosaurs,' Upending T. rex Growth Models

Wyoming 'Mummy' Fossils Show Duck-Billed Dinosaur Had Hooves, Not Preserved Skin

Oldest Known Lepidosaur From 242 Million Years Ago Recasts Early Lizard Evolution