1. Stages in the origin of bird flight: Beyond the arboreal-cursorial dichotomy;Padian,2001
2. Archaeopteryx and the origin of flight;Ostrom;Q. Rev. Biol.,1974
3. Forelimb function in Archaeopteryx;Yalden,1985
4. A comparative study on the claws of Archaeopteryx;Peters;LA. Co. Mus. Sci. Ser.,1992
5. Evidence from claw geometry indicating arboreal habits of Archaeopteryx;Feduccia;Science,1993