(A) View of right ulna of Velociraptor IGM 100/981.
(B) Detail from cast of red box in (A), with arrows showing six evenly spaced feather quill knobs.
(C) View of right ulna of a turkey vulture (Cathartes).
(D) Same view of Cathartes as in (C) but with soft tissue dissected to reveal placement of the secondary feathers relative to the quill knobs.
(E) Detail of Cathartes, with one quill completely removed to reveal quill knob.
(F) Same view as in (E) but with quill moved to the left to show placement of quill, knob, and follicular ligament. Follicular ligament indicated with arrow.
Scientists have known for years that many dinosaurs had feathers. Now the presence of feathers has been documented in velociraptor, one of the most iconic of dinosaurs and a close relative of birds.
The fossil specimen that the group examined was a velociraptor forearm unearthed in Mongolia in 1998. They found on it clear indications of quill knobs—places where the quills of secondary feathers, the flight or wing feathers of modern birds, were anchored to the bone with ligaments. Quill knobs are also found in many living bird species and are most evident in birds that are strong flyers. Those that primarily soar or that have lost the ability to fly entirely, however, were shown in the study to typically lack signs of quill knobs.
“A lack of quill knobs does not necessarily mean that a dinosaur did not have feathers,” said Alan Turner, lead author on the study and a graduate student of paleontology at the American Museum of Natural History and at Columbia University in New York. “Finding quill knobs on velociraptor, though, means that it definitely had feathers. This is something we'd long suspected, but no one had been able to prove.”
I suspect that that settles that. Feduccia will grasp at some straw or another now I am sure.