Feathers may have started as simple filaments in ancient dinosaurs, but a team of Swiss researchers is digging deep into the ...

Feathers evolved from simple structures called proto-feathers, which appeared around 200 million years ago in certain dinosaurs. These cylindrical filaments lacked the complexity of modern feathers.

This research provides new insights into the morphogenetic mechanisms that led to feather diversification throughout evolution. Feathers ... molecule into the blood vessels of chicken embryos ...