Feather
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Feathers are epidermal growths that form a distinctive outer covering, or plumage, on both avian and some non-avian dinosaurs and other archosaurs. They are the most complex integumentary structures f
Feather variations
Parts of a feather: Vane Shaft, rachis Barbs Aftershaft, afterfeather Quill, calamus
Filoplumes can be important in nuptial display; in the great cormorant they are white, and produced on the head and upper neck at the start of the breeding season, and shed soon after nesting.
Feather structure of a blue-and-yellow macaw
Feathered dinosaur
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A feathered dinosaur is any species of dinosaur possessing feathers, including all species of birds. In recent decades, evidence has accumulated that many non-avian dinosaur species also possessed fea
Feather
…at the base of archosauria, supporting that feathers were present at early ornithodirans and is consistent with the fossil record. Several non-avian dinosaurs had feathers on their limbs that would not have functioned for flight. One theory suggests that feathers originally evolved on dinosaurs due to their…
Birds are the best-known feathered dinosaurs
The Berlin Archaeopteryx
Cast in Japan of a resting trace from Massachusetts, which was argued to have been made by a theropod like Dilophosaurus and to include feather impressions around the belly (arrow), but that has been questioned.
Sinosauropteryx fossil, the first fossil of a definitively non-avialan dinosaur with feathers