Science ❯ Biology ❯ Anatomy ❯ Vertebrate Anatomy

Dinosaur Anatomy

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

Growth‑ring histology plus spinal fusion evidence indicate the specimen was about 20 years old and fully mature.

Wyoming 'Mummy Zone' Yields First Reptile Hooves and Full Duck-Billed Dinosaur Profile