摘要
Rejuvenation of dinosaurian origin of birds and its theoretical difficultiesIn 1986, Prof. Jacques Gauthier from Yale University first applied cladistic systimatics to the analysis of
Rejuvenation of dinosaurian origin of birds and its theoretical difficulties
In 1986, Prof. Jacques Gauthier from Yale University first applied cladistic systimaties to the analysis of the relationships between birds and other species in archosauria, a basal reptilian group that includes dinosaurs, pterosaurs, crocodilias and some other extinct reptilians. His analysis further confirmed that birds might have originated from a branch of small theropods close to Deinonychosauria. Encouraged by this work, the paleontological community cast intense attention to birds＇ dinosaurian origin theory,
