Birds have paedomorphic dinosaur skulls

@article{Bhullar2012BirdsHP,
  title={Birds have paedomorphic dinosaur skulls},
  author={B. Bhullar and J. Marug{\'a}n-Lob{\'o}n and Fernando Racimo and G. Bever and T. Rowe and M. Norell and A. Abzhanov},
  journal={Nature},
  year={2012},
  volume={487},
  pages={223-226}
}
The interplay of evolution and development has been at the heart of evolutionary theory for more than a century. [...] Key Method We analysed the variability of a series of landmarks on all known theropod dinosaur skull ontogenies as well as outgroups and birds. The first dimension of variability captured ontogeny, indicating a conserved ontogenetic trajectory. The second dimension accounted for phylogenetic change towards more bird-like dinosaurs. Basally branching eumaniraptorans and avialans clustered with…Expand
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