Keywords: Furcula evolution4.png en Furcula evolution in dinosaurs and birds es Evolución de la fúrcula en dinosaurios y aves own Osado 2008 based on Image Furcula evolution3 png Coelophysis fossils Allosaurus fossils Velociraptor fossils Archaeopteryx fossils Columbidae bones Evolutionary biology Furcula Dinosauria skeletal diagrams Animal bone comparisons |