Reports

Feathers of Archaeopteryx: Asymmetric Vanes Indicate Aerodynamic Function

Science  09 Mar 1979:
Vol. 203, Issue 4384, pp. 1021-1022
DOI: 10.1126/science.203.4384.1021

Abstract

Vanes in the primary flight feathers of Archaeopteryx conform to the asymmetric pattern in modern flying birds. The asymmetry has aerodynamic functions and can be assumed to have evolved in the selective context of flight.