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Confuciusornis is an example of their trend. While keeping the clawed fingers, perhaps for climbing, it had a pygostyle tail, though longer than in modern birds. A large group of birds, the Enantiornithes, evolved into ecological niches similar to those of modern birds and flourished throughout the Mesozoic. Though their wings resembled those ...
A turning point came in the early twentieth century with the writings of Gerhard Heilmann of Denmark.An artist by trade, Heilmann had a scholarly interest in birds and from 1913 to 1916, expanding on earlier work by Othenio Abel, [12] published the results of his research in several parts, dealing with the anatomy, embryology, behavior, paleontology, and evolution of birds. [13]
The WAIR hypothesis, a version of the "cursorial model" of the evolution of avian flight, in which birds' wings originated from forelimb modifications that provided downforce, enabling the proto-birds to run up extremely steep slopes such as the trunks of trees, was prompted by observation of young chukar chicks, and proposes that wings ...
However, the evolutionary transition from dinosaur to bird and the timing of the birds’ origin are still contested,” the paper reads. “That these tracks of southern Africa, dating to the ...
Feduccia's research has focused on ornithology, evolutionary biology, vertebrate history and morphogenesis, and the tempo and mode of the Cenozoic vertebrate radiation. His early work in the 1970s focused on clarification of the evolutionary history of modern birds (), focusing, in particular, on the identification of conserved morphological characters that might elucidate phylogeny more ...
Edwards' research focuses on the molecular evolution of birds.Several papers from his group describe the evolution of birds from dinosaurs; for example, genetic evidence was reported for the evolution of genes involved in feather formation much earlier than the common ancestor of modern birds, supporting the hypothesis that non-avian dinosaurs had feathers.
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National Geographic's Ed Yong says Cooper's research supports a newer theory about the flightless bird family: that they "evolved from small, flying birds that flapped their way between continents ...