A Feathered Dinosaur Tail with Primitive Plumage Trapped in Mid-Cretaceous Amber

Describes the first skeletal non-avian dinosaur remains found in amber—a 99-million-year-old juvenile tail section with eight vertebrae and 3D chestnut-brown and white plumage. Microscopic imaging reveals primitive, branching barbs and barbules lacking a rigid central shaft, confirming early feather evolution models.