Keywords: Homology.jpg Diagram of homologous bones and analogous flying adaptions in the forelimbs of three groups of flying vertebrates both recent and fossilized 1 pterosaur Pterosauria 2 bat Chiroptera 3 bird Aves Darstellung homologer Knochen und analoger Fluganpassungen in den Vordergliedmaßen dreier Wirbeltiergruppen rezent und fossil 1 Flugsaurier Pterosauria 2 Fledertier Chiroptera 3 Vogel Aves Diagrama de huesos homólogos y adaptaciones de vuelo análogas en las extremidades superiores de tres grupos ede vertebrados voladores tanto recientes como fosilizados 1 Pterodáctilo Pterosauria 2 Murciélago Chiroptera 3 Aves Aves Picture from John Romanes' Darwin and after Darwin http //www talkorigins org/faqs/precursors/images/homology jpg 1892 John Romanes 1892 Darwin and after Darwin Copyright expired as artist died more than 70 years ago PD-old Bat wings Pterosauria wings Bird wings Animal limb comparisons |