Archaeopteryx airfoil. This would have reduced stall speed by up to 6% and turning radius by up to 12%. The feathers of "Archaeopteryx" were asymmetrical. This has been interpreted as evidence that it was a flyer, because flightless birds tend to have symmetrical feathers. Some scientists, including Thomson and Speakman, have questioned this. They studied more than 70 families of living birds, and found that some flightless types do have a range of asymmetry in their feathers, and that the feathers of "Archaeopteryx" fall into this range. The degree of asymmetry seen in "Archaeopteryx" is more typical for slow flyers than
Specimens of Archaeopteryx the feather. "Archaeopteryx lithographica" was initially named for this original feather, rather than the full skeleton that was found around the same time, and the feather was originally the formal type specimen and holotype for the species. There are obvious problems with this idea, such as the fact that the feather may have come from a juvenile, or possibly another species altogether. The distal obtuse angle at the tip is not a feature found on the feathers of any other "Archaeopteryx" skeleton with integument imprints. It is possible, however, that the strange angle of the tip is an artifact caused