Definitive fossil evidence for the extant avian radiation in the Cretaceous

@article{Clarke2005DefinitiveFE,
  title={Definitive fossil evidence for the extant avian radiation in the Cretaceous},
  author={Julia A. Clarke and Claudia P Tambussi and Jorge Ignacio Noriega and Gregory M. Erickson and Richard A. Ketcham},
  journal={Nature},
  year={2005},
  volume={433},
  pages={305-308}
}
Long-standing controversy surrounds the question of whether living bird lineages emerged after non-avian dinosaur extinction at the Cretaceous/Tertiary (K/T) boundary or whether these lineages coexisted with other dinosaurs and passed through this mass extinction event. Inferences from biogeography and molecular sequence data (but see ref. 10) project major avian lineages deep into the Cretaceous period, implying their ‘mass survival’ at the K/T boundary. By contrast, it has been argued that… Expand
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