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What is Understanding Aves and Avialae Definitions about?
1. Birds and crocodiles are the only living representatives of the reptile group Archosauria. 2. There have been conflicting definitions of "Aves" - whether it refers to feathered dinosaurs, flying animals, or the last common ancestor of modern birds. 3. Jacques Gauthier proposed defining Aves as only the crown group of modern birds, excluding most fossil groups and assigning them to Avialae instead, to avoid uncertainties about how Archaeopteryx relates to dinosaurs.
- Author
- Jaisurya Sharma
- Language
- EN