Feather Evolution

A gliding, four-winged dinosaur’s feathers:

Dinosaurs, such as Anchiornis, had shaggy, primitive feathers prior to the evolution of highly adapted feathers in modern birds.

Study: Palaeontology

Media: New York Times, Smithsonian Magazine

Structures in dinosaur fossils are feathers, not collagen:

A likely final blow against the argument that filaments around the bones are collagen fibers from the skin. They are feathers, based on overwhelming evidence.

Study: Palaeontology

Psittacosaurus tail bristles resemble those of modern birds:

External and internal structural similarities suggest shared ancestry of basic developmental processes in feathers deep into archosaur evolution. Bristles possibly functioned in sexual display.

Study: Palaeontology

Media: Discover Magazine, Inverse, le Scienze (Italian)

Psittacosaurus tail under laser fluorescence